更新后的 firefox 程序包修复了多种安全问题，现在可用于Red Hat Enterprise Linux 5、6 和 7。

Red Hat 产品安全团队将此更新评级为具有严重安全影响。可从“参考”部分中的 CVE 链接获取针对每个漏洞的通用漏洞评分系统 (CVSS) 基本分数，其给出了详细的严重性等级。

Mozilla Firefox 是一款开源 Web 浏览器。XULRunner 提供用于 Mozilla Firefox 的 XUL Runtime 环境。

在对畸形 Web 内容的处理中发现多个缺陷。包含恶意内容的网页可导致 Firefox 崩溃，或者可能以运行 Firefox 的用户的权限执行任意代码。（CVE-2016-1952、CVE-2016-1954、CVE-2016-1957、CVE-2016-1958、CVE-2016-1960、CVE-2016-1961、CVE-2016-1962、CVE-2016-1973、CVE-2016-1974、CVE-2016-1964、CVE-2016-1965、CVE-2016-1966）

在 Firefox 随附的 graphite2 字体库中发现多个安全缺陷。包含恶意内容的网页可导致 Firefox 崩溃，或者可能以运行 Firefox 的用户的权限执行任意代码。（CVE-2016-1977、CVE-2016-2790、CVE-2016-2791、CVE-2016-2792、CVE-2016-2793、CVE-2016-2794、CVE-2016-2795、CVE-2016-2796、CVE-2016-2797、CVE-2016-2798、CVE-2016-2799、CVE-2016-2800、CVE-2016-2801、CVE-2016-2802）

Red Hat 在此感谢 Mozilla 项目报告这些问题。上游感谢这些问题的原始报告者 Bob Clary、Christoph Diehl、Christian Holler、Andrew McCreight、Daniel Holbert、Jesse Ruderman、Randell Jesup、Nicolas Golubovic、Jose Martinez、Romina Santillan、Abdulrahman Alqabandi、ca0nguyen、lokihardt、Dominique Hazael-Massieux、Nicolas Gregoire、Tsubasa Iinuma、GCHQ 的 Communications Electronics Security Group (UK)、Holger Fuhrmannek、Ronald Crane 和 Tyson Smith。

所有 Firefox 用户应升级这些更新后的程序包，其中包含已修正了这些问题的 Firefox 版本 38.7.0 ESR。安装更新后，必须重新启动 Firefox 才能使更改生效。

USN-2917-1 修复了 Firefox 中的漏洞。此更新造成多个回归问题，其可导致搜索引擎设置丢失，搜索供应商列表显示为空白，或在输入无效 URL 后发生位置栏损坏。此更新修复了该问题。

我们对不便之处表示抱歉。

Francis Gabriel 在 NSS 的 ASN.1 解码期间发现一个缓冲区溢出。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1950)

Bob Clary、Christoph Diehl、Christian Holler、Andrew McCreight、Daniel Holbert、Jesse Ruderman、Randell Jesup、Carsten Book、Gian-Carlo Pascutto、Tyson Smith、Andrea Marchesini 与 Jukka Jylanki 在 Firefox 中发现多个内存安全问题。如果用户受到诱骗打开特别构建的网站，攻击者可能利用这些漏洞，通过应用程序崩溃造成拒绝服务，或者调用 Firefox 的用户的权限执行任意代码。（CVE-2016-1952、CVE-2016-1953）

Nicolas Golubovic 发现 CSP 违规报告可用来覆盖本地文件。如果用户受到诱骗而在禁用附加组件签名及安装解包附加组件的情况下打开特别构建的网站，攻击者可能会利用此漏洞取得其他权限。
(CVE-2016-1954)

Muneaki Nishimura 发现 CSP 违规报告中包含跨源 iframe 导航的完整路径。攻击者可能利用此漏洞窃取机密数据。(CVE-2016-1955)

Ucha Gobejishvili 发现执行特定 WebGL 操作导致某些 Intel GPU 内存资源耗尽，而需要重新启动。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞造成拒绝服务。
(CVE-2016-1956)

Jose Martinez 与 Romina Santillan 发现，在某些情况下，在 MPEG4 视频文件处理期间，libstagefright 中存在内存泄漏。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此问题，通过内存耗尽造成拒绝服务。(CVE-2016-1957)

Abdulrahman Alqabandi 发现，在某些情况下，地址列可能为空白，或填满页面定义的内容。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞进行 URL 欺骗攻击。
(CVE-2016-1958)

Looben Yang 在 Service Worker Manager 中发现一个越界读取错误。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1959)

在 HTML5 字符串解析器中发现一个释放后使用错误。
如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1960)

在 HTMLDocument 的 SetBody 函数中发现一个释放后使用错误。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1961)

Dominique Hazael-Massieux 发现使用多个 WebRTC 数据通道时存在一个释放后使用错误。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1962)

已发现在 FileReader API 读取本地文件时修改本地文件会造成 Firefox 崩溃。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此缺陷以调用 Firefox 的用户的权限执行任意代码。
(CVE-2016-1963)

Nicolas Gregoire 发现 XML 转换期间存在一个释放后使用错误。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1964)

Tsubasa Iinuma 发现一个机制会造成地址栏显示使用历史导航与位置协议属性的不正确 URL。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞进行 URL 欺骗攻击。(CVE-2016-1965)

在 NPAPI 子系统中发现一个内存损坏问题。如果用户受到诱骗打开已安装恶意插件的特别构建的网站，攻击者可能利用这些漏洞，通过造成应用程序崩溃造成拒绝服务，或者以调用 Firefox 用户的权限执行任意代码。
(CVE-2016-1966)

Jordi Chancel 在使用具有会话还原功能的 performance.getEntries 与历史记录导航时发现一个同源策略绕过错误。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此问题窃取机密数据。(CVE-2016-1967)

Luke Li 发现在某些情况下，Brotli 解压缩期间存在一个缓冲区溢出。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1968)

Ronald Crane 发现 WebRTC 的 GetStaticInstance 中存在一个释放后使用问题。如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1973)

Ronald Crane 发现在某些情况下，在 HTML 解析器中发生失败分配之后存在一个越界读取错误。
如果用户受到诱骗打开特别构建的网站，攻击者可能利用此漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。(CVE-2016-1974)

Holger Fuhrmannek、Tyson Smith 与 Holger Fuhrmannek 报告 Graphite 2 库中存在多个内存安全问题。如果用户受到诱骗打开特别构建的网站，攻击者可能利用这些漏洞，通过应用程序崩溃造成拒绝服务，或者以调用 Firefox 的用户的权限执行任意代码。（CVE-2016-1977、CVE-2016-2790、CVE-2016-2791、CVE-2016-2792、CVE-2016-2793、CVE-2016-2794、CVE-2016-2795、CVE-2016-2796、CVE-2016-2797、CVE-2016-2798、CVE-2016-2799、CVE-2016-2800、CVE-2016-2801、CVE-2016-2802）

请注意，Tenable Network Security 已直接从 Ubuntu 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下，尽可能进行自动清理和排版。

此 MozillaFirefox、mozilla-nspr、mozilla-nss 更新可修复以下问题：

MozillaFirefox 已更新到 Firefox 45.0 (boo#969894)

- 需要 NSPR 4.12 / NSS 3.21.1

- 通过 Hello 共享的实时浏览器选项卡

- 按钮栏中的同步选项卡按钮

- 通过 Firefox 帐户从其他设备同步的选项卡现在在搜索时会显示在智能地址栏的下拉区域中

- 引入新首选项 (network.dns.blockDotOnion) 以允许在 DNS 级别阻断 .onion

- 已删除选项卡群组 (Panorama) 功能

- MFSA 2016-16/CVE-2016-1952/CVE-2016-1953 多项内存安全危害

- MFSA 2016-17/CVE-2016-1954 (bmo#1243178) 通过 CSP 报告发生的本地文件覆盖和潜在的权限升级

- MFSA 2016-18/CVE-2016-1955 (bmo#1208946) CSP 报告无法剥离嵌入 iframe 页面的位置信息

- MFSA 2016-19/CVE-2016-1956 (bmo#1199923) Linux 视频内存因 Intel 驱动程序而发生 DOS

- MFSA 2016-20/CVE-2016-1957 (bmo#1227052) 在处理 MP4 期间删除数组时，libstagefright 中发生内存泄漏

- MFSA 2016-21/CVE-2016-1958 (bmo#1228754) 可覆盖显示的页面地址

- MFSA 2016-22/CVE-2016-1959 (bmo#1234949) Service Worker Manager 中发生 Service Worker Manager 越界读取

- MFSA 2016-23/CVE-2016-1960/ZDI-CAN-3545 (bmo#1246014) HTML5 字符串解析器中的释放后使用

- MFSA 2016-24/CVE-2016-1961/ZDI-CAN-3574 (bmo#1249377) SetBody 中的释放后使用

- MFSA 2016-25/CVE-2016-1962 (bmo#1240760) 使用多个 WebRTC 数据通道时的释放后使用

- MFSA 2016-26/CVE-2016-1963 (bmo#1238440) 修改 FileReader 所读取的文件时发生内存损坏

- MFSA 2016-27/CVE-2016-1964 (bmo#1243335) XML 转换期间存在释放后使用

- MFSA 2016-28/CVE-2016-1965 (bmo#1245264) 通过历史记录导航和位置协议属性进行地址栏欺骗

- MFSA 2016-29/CVE-2016-1967 (bmo#1246956) 使用 perfomance.getEntries 和具有会话还原的历史记录导航时的同源策略冲突

- MFSA 2016-30/CVE-2016-1968 (bmo#1246742) 在 Brotli 解压缩期间存在缓冲区溢出

- MFSA 2016-31/CVE-2016-1966 (bmo#1246054) 因恶意 NPAPI 插件造成的内存损坏

- MFSA 2016-32/CVE-2016-1970/CVE-2016-1971/CVE-2016-1975/ CVE-2016-1976/CVE-2016-1972 通过代码检查发现的 WebRTC 和 LibVPX 漏洞

- MFSA 2016-33/CVE-2016-1973 (bmo#1219339) WebRTC 的 GetStaticInstance 中的释放后使用

- MFSA 2016-34/CVE-2016-1974 (bmo#1228103) 分配失败后的 HTML 解析器中存在越界读取

- MFSA 2016-35/CVE-2016-1950 (bmo#1245528) 在 NSS 的 ASN.1 解码期间发生缓冲区溢出（已通过要求 3.21.1 来修复）

- MFSA 2016-36/CVE-2016-1979 (bmo#1185033) 处理 NSS 中的 DER 编码密钥期间发生释放后使用（已通过要求 3.21.1 来修复）

- MFSA 2016-37/CVE-2016-1977/CVE-2016-2790/CVE-2016-2791/ CVE-2016-2792/CVE-2016-2793/CVE-2016-2794/CVE-2016-2795/ CVE-2016-2796/CVE-2016-2797/CVE-2016-2798/CVE-2016-2799/ CVE-2016-2800/CVE-2016-2801/CVE-2016-2802 Graphite 2 库中的字体漏洞

mozilla-nspr 已更新到版本 4.12

- 添加了 PR_GetEnvSecure 函数，其会尝试检测程序是否正以提升的权限执行，如果检测到便返回 NULL。建议在通用库代码中使用此函数。

- 修复了一个与 PR_*printf 函数相关的内存分配缺陷

- 导出了 API PR_DuplicateEnvironment，其已在 NSPR 4.10.9 中添加

- 添加了对 FreeBSD aarch64 的支持

- 多个次要正确性和兼容性补丁

mozilla-nss 已更新到 NSS 3.21.1 (bmo#969894)

- Firefox 45.0 所需

- MFSA 2016-35/CVE-2016-1950 (bmo#1245528) 在 NSS 的 ASN.1 解码期间发生缓冲区溢出（已通过要求 3.21.1 来修复）

- MFSA 2016-36/CVE-2016-1979 (bmo#1185033) 处理 NSS 中的 DER 编码密钥期间发生释放后使用（已通过要求 3.21.1 来修复）

The version of Firefox installed on the remote host is prior to 45.0 and is affected by multiple vulnerabilities : 

 - Mozilla Network Security Services (NSS) contains an overflow condition. The issue is triggered as user-supplied input is not properly validated when parsing ASN.1 structures. With a specially crafted certificate, a context-dependent attacker can cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-1950) 
 - A flaw exists in the 'ValueNumberer::fixupOSROnlyLoop()' function in 'jit/ValueNumbering.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw in the 'Downscaler::BeginFrame()' function in 'image/Downscaler.cpp' exists that is triggered when failing to compute filters for image downscaling. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw exists that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952, CVE-2016-1953)
 - A flaw exists in the 'JSScript::maybeSweepTypes()' function in 'vm/TypeInference.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw exists in the 'DispatchEvents()' function in 'layout/style/nsAnimationManager.h' and 'layout/style/nsTransitionManager.h' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw exists in 'dom/base/Console.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw exists in the 'PeerConnectionMedia::SelfDestruct_m()' function in 'media/webrtc/signaling/src/peerconnection/PeerConnectionMedia.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)
 - A flaw exists in the 'nsICODecoder::ReadDirEntry()' function in 'image/decoders/nsICODecoder.cpp' that is triggered when rendering ICO sub-images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in the 'nsIDNService::IDNA2008ToUnicode()' function in 'netwerk/dns/nsIDNService.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists that is triggered as user-supplied input is not properly validated when handling image decoding. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in the 'DiscardTransferables()' function in 'vm/StructuredClone.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exits in the 'Assembler::GetCF32Target()' function in 'jit/arm/Assembler-arm.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in the 'GetPcScript()' function in 'jit/JitFrames.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in the 'JSFunction::isDerivedClassConstructor()' function in 'js/src/jsfun.cpp' that is triggered when handling lazy self-hosted functions. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in 'js/src/jit/Lowering.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exits in the 'EventListenerManager::HandleEventInternal()' function in 'dom/events/EventListenerManager.cpp'. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in 'layout/base/nsRefreshDriver.cpp' that is triggered when handling transition events. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in 'dom/media/systemservices/CamerasChild.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in 'dom/xslt/xslt/txMozillaTextOutput.cpp' that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in 'dom/gamepad/windows/WindowsGamepad.cpp' that is triggered when handling 'WindowsGamepadService' shutdown. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)
 - A flaw exists in the 'nsCSPContext::SendReports()' function in 'dom/security/nsCSPContext.cpp' that is triggered during the handling of Content Security Policy (CSP) violation reports. This may allow a context-dependent attacker to overwrite arbitrary files on a user's machine and potentially gain elevated privileges. (CVE-2016-1954)
 - A flaw exists in 'dom/security/nsCSPContext.cpp' that is due to Content Security Policy (CSP) violation reports containing full path information for cross-origin iframe navigations in violation of the CSP specification. This may allow a context-dependent attacker to gain unauthorized access to sensitive information. (CVE-2016-1955)
 - A flaw exists in 'gfx/gl/GLContext.cpp' when using Intel Video cards that is triggered when performing WebGL operations that require a large amount buffer to be allocated from video memory. This may allow a context-dependent to cause a consumption of memory resources that will persist until the system has been restarted. (CVE-2016-1956)
 - Google Stagefright contains a flaw that is triggered during the handling of array destruction during MPEG4 video file processing. This may allow a context-dependent attacker to cause a memory leak, with unspecified consequences. (CVE-2016-1957)
 - An unspecified flaw exists that may allow a context-dependent attacker to spoof the user's address bar. No further details have been provided. (CVE-2016-1958)
 - A flaw exists  in Service Worker Manager that is triggered when handling the Clients API. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1959)
 - A flaw exists in  use-after-free error in the HTML5 string parser. The issue is triggered when parsing a set of table-related tags in a foreign fragment context such as SVG. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1960)
 - A flaw exists in use-after-free error in the 'nsHTMLDocument::SetBody()' function in 'dom/html/nsHTMLDocument.cpp'. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1961)
 - A flaw exists in use-after-free error in 'netwerk/sctp/datachannel/DataChannel.cpp' when using multiple 'WebRTC' data channel connections and freeing a data channel connection from within a call. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1962)
 - A flaw exists in the 'FileReader::DoReadData()' function in 'dom/base/FileReader.cpp'. The issue is triggered as user-supplied input is not properly validated when handling modifications to local files that occur while they are being read with the FileReader API. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1963)
 - A flaw exists in use-after-free error in the 'txAttribute::execute()' function in 'dom/xslt/xslt/txInstructions.cpp' that is triggered when handling XML transformation operations. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1964)
 - A flaw exists in the 'nsLocation::SetProtocol()' function in 'dom/base/nsLocation.cpp' that is triggered when handling history navigation in combination with the location protocol property. This may allow a context-dependent attacker to spoof the contents of the address bar. (CVE-2016-1965)
 - A flaw exists that is triggered when handling history navigation in a restored browser session. This may potentially allow a context-dependent attacker to gain unauthorized access to cross-origin URL information. (CVE-2016-1967)
 - A pointer underflow condition exists in the 'Brotli' library. The issue is triggered as user-supplied input is not properly validated when the library is performing decompression. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code. (CVE-2016-1968)
 - A use-after-free flaw exists in the Netscape Plugin Application Programming Interface (NPAPI) plugin within the 'nsNPObjWrapper::GetNewOrUsed()' function in 'dom/plugins/base/nsJSNPRuntime.cpp'. The issue is triggered when handling malicious scripted web content in concert with the plugin. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1966)
 - An integer underflow condition exists in the 'srtp_unprotect()' function in 'netwerk/srtp/src/srtp/srtp.c' that is triggered when handling SRTP packet lenghts. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1970)
 - A flaw exists in the 'I420VideoFrame::CreateFrame()' function in WebRTC. The issue is triggered as user-supplied input is not properly validated due to a missing status check. This may potentially allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1971)
 - 'ibvpx' contains a use-after-free error in 'vpx_ports/vpx_once.h' related to a race condition. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1972)
 - A race condition exists in 'dom/media/systemservices/CamerasChild.h'. The issue is triggered as user-supplied input is not properly validated when handling block-level statistics. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1975)
 - A use-after-free flaw exists in 'DesktopDisplayDevice::operator=' in 'media/webrtc/trunk/webrtc/modules/desktop_capture/desktop_device_info.cc'. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1976)
 - A flaw exists in use-after-free error that is triggered by a race condition in 'GetStaticInstance' in WebRTC. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1973)
 - A flaw exists in the 'nsScannerString::AppendUnicodeTo()' function in 'parser/htmlparser/nsScannerString.cpp'. The issue is triggered when the program fails to allocate memory during handling of unicode strings. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1974)
 - Mozilla Network Security Services (NSS) contains a use-after-free error in the 'PK11_ImportDERPrivateKeyInfoAndReturnKey()' function. The issue is triggered when handling DER encoded keys. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1979)

 The Graphite/Libgraphite component used in Mozilla Firefox contains the following vulnerabilities : 

 - An out-of-bounds write flaw exists in the 'setAttr()' function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1969)
 - A flaw exists in the 'Machine::Code::decoder::analysis::set_ref()' function. The issue is triggered as user-supplied input is not properly validated. With a specially crafted font, a context-dependent attacker can corrupt memory to cause a denial of service in a process linked against the library or potentially execute arbitrary code. (CVE-2016-1977)
 - A flaw exists in the 'GetTableInfo()' function in 'TtfUtil.cpp' related to the use of uninitialized memory when handling a specially crafted font. This may allow a context-dependent attacker to have an unspecified impact. (CVE-2016-2790)
 - An out-of-bounds read flaw exists in the 'GlyphCache::glyph()' function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2791)
 - An out-of-bounds read flaw exist in the 'getAttr()' function in 'Slot.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2792)
 - An out-of-bounds read flaw in 'CachedCmap.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2793)
 - An out-of-bounds read flaw in the 'CmapSubtable12NextCodepoint()' function in 'TtfUtil.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2794)
 - A flaw exists in the 'FileFace::get_table_fn()' function related to the use of uninitialized memory when handling a specially crafted font. This may allow a context-dependent attacker to have an unspecified impact. (CVE-2016-2795)
 - An out-of-bounds write flaw exixts in the 'vm::Machine::Code::Code()' function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-2796)
 - An out-of-bounds read flaw exists in the 'CmapSubtable12Lookup()' function in 'TtfUtil.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2797)
 - An out-of-bounds read flaw exists in the 'GlyphCache::Loader::Loader()' function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2798)
 - An out-of-bounds write flaw exists in the 'setAttr()' function in 'Slot.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-2799)
 - An out-of-bounds read flaw exists in the 'getAttr()' function in 'Slot.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2800)
 - An out-of-bounds read flaw exists in the 'CmapSubtable12Lookup()' function in 'TtfUtil.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2801)
 - An out-of-bounds read flaw existsin the 'CmapSubtable4NextCodepoint()' function in 'TtfUtil.cpp' that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2802)

The specific version of Firefox that the system is running is reportedly affected by the following vulnerabilities:

- Mozilla Firefox contains a flaw in the ValueNumberer::fixupOSROnlyLoop() function in jit/ValueNumbering.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in the Downscaler::BeginFrame() function in image/Downscaler.cpp that is triggered when failing to compute filters for image downscaling. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in the JSScript::maybeSweepTypes() function in vm/TypeInference.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in the DispatchEvents() function in layout/style/nsAnimationManager.h and layout/style/nsTransitionManager.h that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in dom/base/Console.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in the PeerConnectionMedia::SelfDestruct_m() function in media/webrtc/signaling/src/peerconnection/PeerConnectionMedia.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1952)

- Mozilla Firefox contains a flaw in the nsICODecoder::ReadDirEntry() function in image/decoders/nsICODecoder.cpp that is triggered when rendering ICO sub-images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the nsIDNService::IDNA2008ToUnicode() function in netwerk/dns/nsIDNService.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated when handling image decoding. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the DiscardTransferables() function in vm/StructuredClone.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the Assembler::GetCF32Target() function in jit/arm/Assembler-arm.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the GetPcScript() function in jit/JitFrames.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the JSFunction::isDerivedClassConstructor() function in js/src/jsfun.cpp that is triggered when handling lazy self-hosted functions. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in js/src/jit/Lowering.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the EventListenerManager::HandleEventInternal() function in dom/events/EventListenerManager.cpp. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in layout/base/nsRefreshDriver.cpp that is triggered when handling transition events. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in dom/media/systemservices/CamerasChild.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- libvpx contains a flaw in the vp8_mb_init_dequantizer() function in vp8/decoder/decodeframe.c that is triggered as user-supplied input is not properly validated. With specially crafted media content, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- libvpx contains a flaw in the vp8_loop_filter_frame_init() function in media/libvpx/vp8/common/loopfilter.c that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in dom/xslt/xslt/txMozillaTextOutput.cpp that is triggered as user-supplied input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in dom/gamepad/windows/WindowsGamepad.cpp that is triggered when handling WindowsGamepadService shutdown. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1953)

- Mozilla Firefox contains a flaw in the nsCSPContext::SendReports() function in dom/security/nsCSPContext.cpp that is triggered during the handling of Content Security Policy (CSP) violation reports. This may allow a context-dependent attacker to overwrite arbitrary files on a user's machine and potentially gain elevated privileges. (CVE-2016-1954)

- Mozilla Firefox contains a flaw in dom/security/nsCSPContext.cpp that is due to Content Security Policy (CSP) violation reports containing full path information for cross-origin iframe navigations in violation of the CSP specification. This may allow a context-dependent attacker to gain unauthorized access to sensitive information. (CVE-2016-1955)

- Mozilla Firefox contains a flaw in gfx/gl/GLContext.cpp when using Intel Video cards that is triggered when performing WebGL operations that require a large amount buffer to be allocated from video memory. This may allow a context-dependent to cause a consumption of memory resources that will persist until the system has been restarted. (CVE-2016-1956)

- Google Stagefright contains a flaw that is triggered during the handling of array destruction during MPEG4 video file processing. This may allow a context-dependent attacker to cause a memory leak, with unspecified consequences.
 (CVE-2016-1957)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to spoof the user's address bar. No further details have been provided. (CVE-2016-1958)

- Mozilla Firefox contains a flaw in Service Worker Manager that is triggered when handling the Clients API. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1959)

- Mozilla Firefox contains a use-after-free error in the HTML5 string parser. The issue is triggered when parsing a set of table-related tags in a foreign fragment context such as SVG. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1960)

- Mozilla Firefox contains a use-after-free error in the nsHTMLDocument::SetBody() function in dom/html/nsHTMLDocument.cpp. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1961)

- Mozilla Firefox contains a use-after-free error in netwerk/sctp/datachannel/DataChannel.cpp when using multiple WebRTC data channel connections and freeing a data channel connection from within a call. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1962)

- Mozilla Firefox contains a flaw in the FileReader::DoReadData() function in dom/base/FileReader.cpp. The issue is triggered as user-supplied input is not properly validated when handling modifications to local files that occur while they are being read with the FileReader API. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1963)

- Mozilla Firefox contains a use-after-free error in the txAttribute::execute() function in dom/xslt/xslt/txInstructions.cpp that is triggered when handling XML transformation operations. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1964)

- Mozilla Firefox contains a flaw in the nsLocation::SetProtocol() function in dom/base/nsLocation.cpp that is triggered when handling history navigation in combination with the location protocol property. This may allow a context-dependent attacker to spoof the contents of the address bar. (CVE-2016-1965)

- Mozilla Firefox contains a flaw that is triggered when handling history navigation in a restored browser session. This may potentially allow a context-dependent attacker to gain unauthorized access to cross-origin URL information. (CVE-2016-1967)

- Mozilla Firefox contains a pointer underflow condition in the Brotli library. The issue is triggered as user-supplied input is not properly validated when the library is performing decompression. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code. (CVE-2016-1968)

- Mozilla Firefox contains a use-after-free flaw in the Netscape Plugin Application Programming Interface (NPAPI) plugin within the nsNPObjWrapper::GetNewOrUsed() function in dom/plugins/base/nsJSNPRuntime.cpp. The issue is triggered when handling malicious scripted web content in concert with the plugin. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1966)

- Mozilla Firefox contains an integer underflow condition in the srtp_unprotect() function in netwerk/srtp/src/srtp/srtp.c that is triggered when handling SRTP packet lenghts. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1970)

- Mozilla Firefox contains a flaw in the I420VideoFrame::CreateFrame() function in WebRTC. The issue is triggered as user-supplied input is not properly validated due to a missing status check. This may potentially allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1971)

- Mozilla Firefox contains a race condition in dom/media/systemservices/CamerasChild.h. The issue is triggered as user-supplied input is not properly validated when handling block-level statistics. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1975)

- Mozilla Firefox contains a use-after-free flaw in DesktopDisplayDevice::operator= in media/webrtc/trunk/webrtc/modules/desktop_capture/desktop_device_info.cc. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1976)

- libvpx contains a use-after-free error in vpx_ports/vpx_once.h related to a race condition. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 (CVE-2016-1972)

- Mozilla Firefox contains a use-after-free error that is triggered by a race condition in GetStaticInstance in WebRTC. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1973)

- Mozilla Firefox contains a flaw in the nsScannerString::AppendUnicodeTo() function in parser/htmlparser/nsScannerString.cpp. The issue is triggered when the program fails to allocate memory during handling of unicode strings. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1974)

- Mozilla Network Security Services (NSS) contains a use-after-free error in the PK11_ImportDERPrivateKeyInfoAndReturnKey() function. The issue is triggered when handling DER encoded keys. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 (CVE-2016-1979)

- Graphite/Libgraphite contains a flaw in the Machine::Code::decoder::analysis::set_ref() function. The issue is triggered as user-supplied input is not properly validated. With a specially crafted font, a context-dependent attacker can corrupt memory to cause a denial of service in a process linked against the library or potentially execute arbitrary code. (CVE-2016-1977)

- Graphite/Libgraphite contains a flaw in the GetTableInfo() function in TtfUtil.cpp related to the use of uninitialized memory when handling a specially crafted font. This may allow a context-dependent attacker to have an unspecified impact. (CVE-2016-2790)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the GlyphCache::glyph() function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2791)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the getAttr() function in Slot.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2792)

- Graphite/Libgraphite contains an out-of-bounds read flaw in CachedCmap.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2793)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the CmapSubtable12NextCodepoint() function in TtfUtil.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2794)

- Graphite/Libgraphite contains a flaw in the FileFace::get_table_fn() function related to the use of uninitialized memory when handling a specially crafted font. This may allow a context-dependent attacker to have an unspecified impact. (CVE-2016-2795)

- Graphite/Libgraphite contains an out-of-bounds write flaw in the vm::Machine::Code::Code() function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-2796)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the CmapSubtable12Lookup() function in TtfUtil.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2797)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the GlyphCache::Loader::Loader() function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2798)

- Graphite/Libgraphite contains an out-of-bounds write flaw in the setAttr() function in Slot.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-2799)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the getAttr() function in Slot.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2800)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the CmapSubtable12Lookup() function in TtfUtil.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2801)

- Graphite/Libgraphite contains an out-of-bounds read flaw in the CmapSubtable4NextCodepoint() function in TtfUtil.cpp that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-2802)

- Graphite/Libgraphite contains an out-of-bounds write flaw in the setAttr() function that is triggered when handling maliciously crafted fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1969)

ID	名稱	產品	系列	已發布	已更新	嚴重性
89774	RHEL 5/6/7：firefox (RHSA-2016:0373)	Nessus	Red Hat Local Security Checks	2016/3/9	2020/5/29	critical
90421	Ubuntu 14.04 LTS：Firefox 回归 (USN-2917-2)	Nessus	Ubuntu Local Security Checks	2016/4/8	2023/10/20	critical
89915	openSUSE 安全更新：Firefox (openSUSE-2016-334)	Nessus	SuSE Local Security Checks	2016/3/14	2021/1/19	critical
9207	Mozilla Firefox < 45.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2016/4/8	2019/3/6	high
802023	Firefox < 45 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	2016/9/7		critical

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