リモートのWindowsホストにインストールされているMozilla Firefox ESRは、52.5.2より前のバージョンです。したがって、コードの実行を許す脆弱性や悪用可能なクラッシュを引き起こす脆弱性など、複数の脆弱性の影響を受けます。

このMozillaFirefoxの52.5.2esrへの更新では、以下の問題を修正します：

  - CVE-2017-7843：プライベートブラウジングモードのWebワーカーが、IndexedDBデータを書き込む可能性があります（boo#1072034、bmo#1410106、MFSA 2017-28）

此更新將 Firefox 升級至 52.5.1 ESR 版。安全性修正：- 在 Firefox 中發現一個隱私缺陷。在「私密瀏覽」模式中，Web 工作者可將持續資料寫入 IndexedDB，而結束時資料卻未清理，因此可能保留在多個工作階段中。惡意網站可利用缺陷來繞過私密瀏覽保護以及唯一指紋訪客。(CVE-2017-7843)

遠端 Windows 主機上安裝的 Mozilla Firefox 版本比 57.0.1 舊。因此，會受到多個弱點影響。請注意：CVE-2017-7844 僅影響 57 版。較舊版本不受影響。

發現 Firefox 的私密瀏覽模式可將持續資料寫入資料庫，即使使用者只在此模式中瀏覽，也可將他們導向會追蹤使用者的網站。針對 Debian 7「Wheezy」，這些問題已在 52.5.2esr-1~deb7u1 版本中修正。建議您升級 firefox-esr 套件。注意：Tenable Network Security 已直接從 DLA 安全性公告擷取前置描述區塊。Tenable 已盡量在不造成其他問題的前提下，嘗試自動清理並將其格式化。

遠端 Windows 主機上安裝的 Mozilla Firefox ESR 版本比 52.5.2 舊。因此受到多個弱點影響，其中有些允許程式碼執行並可能遭惡意利用而當機。

Versions of Mozilla Firefox earlier than 57.0.1 are unpatched for the following vulnerabilities :

 - A flaw exists in the 'PerDocumentStyleDataImpl::visited_styles_enabled()' function in 'servo/components/style/gecko/data.rs'. The issue is triggered when handling the CSS ':visited' selector for a document being used as an SVG image. With a specially crafted web page, a context-dependent attacker disclose visited history information. (CVE-2017-7844)
 - A flaw exists in the 'FactoryOp::CheckPermission()' function in 'dom/indexedDB/ActorsParent.cpp' that is triggered as a web worker in Private Browsing mode can write to IndexedDB. With a specially crafted web page, a context-dependent attacker can uniquely fingerprint a user even when browsing in Private Browsing mode. (CVE-2017-7843)

Versions of Mozilla Firefox ESR earlier than 52.5.2 are unpatched for the following vulnerabilities :

 - A flaw exists in the 'FactoryOp::CheckPermission()' function in 'dom/indexedDB/ActorsParent.cpp' that is triggered as a web worker in Private Browsing mode can write to IndexedDB. With a specially crafted web page, a context-dependent attacker can uniquely fingerprint a user even when browsing in Private Browsing mode. (CVE-2017-7843)
 - An overflow condition exists that is triggered as certain input is not properly validated when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code. (CVE-2017-7845)

Versions of Mozilla Firefox earlier than 57 are unpatched for the following vulnerabilities :

 - A race condition exists in 'dom/media/systemservices/MediaParent.cpp' that is triggered when getting deviceId keys. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in 'js/src/proxy/DeadObjectProxy.cpp' that is triggered when handling object proxies. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists in 'xpcom/threads/SystemGroup.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An overflow condition exists in the 'nr_transport_addr_fmt_ifname_addr_string()' function in 'media/mtransport/third_party/nICEr/src/net/transport_addr.c' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a stack-based buffer overflow and potentially execute arbitrary code.
 - A flaw exists in the 'nsNodeUtils::CloneAndAdopt()' function in 'dom/base/nsNodeUtils.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'GPUProcessHost::OnChannelClosed()' function in 'gfx/ipc/GPUProcessHost.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists in 'gfx/layers/AtomicRefCountedWithFinalize.h' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'NewReactionRecord()' function in 'js/src/builtin/Promise.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'VerifyCMSDetachedSignatureIncludingCertificate()' function in 'security/manager/ssl/nsDataSignatureVerifier.cpp' that is triggered when handling PKCS#7 signedData content. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'ContainerLayerComposite::mPrepared()' function in 'gfx/layers/composite/ContainerLayerComposite.cpp' that is triggered when handling layers. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'MArgumentsLength::computeRange()' function in 'js/src/jit/RangeAnalysis.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free error exists in 'widget/windows/AudioSession.cpp' that is triggered when handling AudioSession objects. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered when handling WebGL texture images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free flaw exists in the 'nsDocShell::~nsDocShell()' function in 'docshell/base/nsDocShell.cpp' that is triggered when notifying observers. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists in the 'CleanupOSFileConstants()' function in 'dom/system/OSFileConstants.cpp' related to use of uninitialized memory. This may allow a context-dependent attacker to potentially execute arbitrary code.
 - A flaw exists in the 'ApplicationReputationService::~ApplicationReputationService()' function in 'toolkit/components/downloads/ApplicationReputation.cpp' that is triggered as certain pointers are not properly cleared. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'EnumerableOwnProperties()' function in 'js/src/builtin/Object.cpp' that is triggered when rooting objects. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free flaw exists in the 'CompositorBridgeChild::RecvDidComposite()' function in 'gfx/layers/ipc/CompositorBridgeChild.cpp' that is triggered when handling texture pools. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists in the 'nsViewManager::~nsViewManager()' function in 'view/nsViewManager.cpp' that is triggered as the PresShell object is not properly handled. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'TLSFilterTransaction::Close()' function in 'netwerk/protocol/http/TunnelUtils.cpp' that is triggered as timers are not properly handled when a transaction is canceled. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'EventStateManager::DispatchCrossProcessEvent()' function in 'dom/events/EventStateManager.cpp' that is triggered when handling drag events. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'nsNodeUtils::CloneAndAdopt()' function in 'dom/base/nsNodeUtils.cpp' that is triggered when handling properties of adopted nodes. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A type confusion flaw exists in the 'PropertyReadNeedsTypeBarrier()' function in 'jit/MIR.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A logic flaw exists in the 'IsMarkedBlack()' function in 'js/src/gc/Barrier.cpp' that is triggered during gray marking asserts. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free error exists that triggered when flushing and resizing the layout, which may cause the PressShell object to be freed while still in use. This may allow a context-dependent attacker to potentially execute arbitrary code.
 - A flaw exists in the 'HttpBaseChannel::GetPerformance()' function in 'netwerk/protocol/http/HttpBaseChannel.cpp' that is triggered as navigations in cross-origin iframes are revealed. Using the Resource Timing API, a context-dependent attacker to gain access to cross-origin URL information.
 - A flaw exists that is triggered as the security wrapper fails to deny access to certain exposed properties using the deprecated exposedProps mechanism on proxy objects. This may allow a context-dependent attacker to gain access to potentially sensitive information.
 - A flaw exists in the 'nsIDNService::isLabelSafe()' function in 'netwerk/dns/nsIDNService.cpp' that is triggered during the handling of the combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or grave. This combinations do not display properly in punycode. With a specially crafted domain including a dotless version of  'i', a context-dependent attacker can spoof a domain.
 - A flaw exists in the 'nsIDNService::isLabelSafe()' function in 'netwerk/dns/nsIDNService.cpp' that is triggered during the handling of Arabic and Indic vowel marker characters that are combined with Latin characters in a domain name, which can cause the non-latin characters to be eclipsed in the address bar. This may allow a context-dependent attacker to spoof a domain.
 - A flaw exists that is triggered as data: URLs loaded into new tabs do not properly inherit the Content Security Policy (CSP) of the original page. This may allow a context-dependent attacker to bypass protection mechanisms.
 - A flaw exists in the 'nsMixedContentBlocker::AsyncOnChannelRedirect()' function in 'dom/security/nsMixedContentBlocker.cpp' that is triggered as mixed content blocking was not properly applied to resources when being redirected from an HTTPS environment to an HTTP environment. This may allow a context-dependent attacker to bypass restricts and load blocked content on pages.
 - A flaw exists in the 'CurlWrapper::Init()' function in 'toolkit/components/telemetry/pingsender/pingsender_unix_common.cpp' that is triggered as it fails to validate the libcurl library before loading it. This may allow a local attacker to replace libcurl files and gain elevated privileges.
 - A flaw exists in the 'nsContentSink::ProcessMETATag()' function in 'dom/base/nsContentSink.cpp' that is triggered during the handling of <meta> tags in SVG passed via <img> tags. This may allow a context-dependent attacker to set cookies for a page.
 - A flaw exists in 'netwerk/dns/nsIDNService.cpp' that is triggered as Punycode format text is not properly displayed in international domain names when triggered by a sub-domain. This may allow a context-dependent attacker to conduct a limited spoofing attack.
 - A flaw exists in the 'stripUnsafeProtocolOnPaste()' function in 'base/content/browser.js' that is triggered during the handling of control characters before javascript: URLs. This may allow a context-dependent attacker to bypass self-XSS protection mechanisms.
 - A flaw exists in the '_writeItem()' function in 'toolkit/components/places/BookmarkHTMLUtils.jsm' that allows a cross-site scripting (self-XSS) attack. This flaw exists exists because the program does not validate input to exported bookmarks before returning it to users. This may allow a context-dependent attacker to create a specially crafted request that would execute arbitrary script code in their own browser.
 - A flaw exists that is triggered as the referrer policy is not always honored when handling <link> elements. This may allow a context-dependent attacker to bypass the referrer policy.
 - A flaw exists in the 'PerDocumentStyleDataImpl::visited_styles_enabled()' function in 'servo/components/style/gecko/data.rs'. The issue is triggered when handling the CSS ':visited' selector for a document being used as an SVG image. With a specially crafted web page, a context-dependent attacker disclose visited history information.
 - A flaw exists in the 'FactoryOp::CheckPermission()' function in 'dom/indexedDB/ActorsParent.cpp' that is triggered as a web worker in Private Browsing mode can write to IndexedDB. With a specially crafted web page, a context-dependent attacker can uniquely fingerprint a user even when browsing in Private Browsing mode.
 - An overflow condition exists that is triggered as certain input is not properly validated when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code.
 - A flaw exists related to speculative execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached during conditional branches handling out-of-bounds checks. Using a vulnerable code pattern, or a JIT engine or interpreter to generate such a pattern, an attacker can perform a Flush+Reload or Evict+Reload side-channel attack on the cache and disclose parts of the privileged kernel memory.
 - A flaw exists in the fundamental design related to out-of-order process execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached before exceptions are raised for restricted memory access. Using transient instructions in combination with a Flush+Reload side-channel attack a local attacker can disclose parts of the privileged kernel memory.
 - A flaw exists related to speculative execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached during indirect branch prediction. This may allow a local attacker to train the Branch Target Buffer (BTB) to trigger a false prediction to a specially crafted memory location, causing a speculative execution of a crafted gadget and the caching of arbitrary memory. Using a side-channel attack on the cache the attacker can disclose parts of the privileged kernel memory.

ID	名稱	產品	系列	已發布	已更新	嚴重性
105212	Mozilla Firefox ESR < 52.5.2の複数の脆弱性	Nessus	Windows	2017/12/13	2018/7/16	high
105246	openSUSEセキュリティ更新プログラム：MozillaFirefox（openSUSE-2017-1366）	Nessus	SuSE Local Security Checks	2017/12/14	2021/1/19	high
105030	Scientific Linux 安全性更新：SL6.x、SL7.x i386/x86_64 上的 firefox	Nessus	Scientific Linux Local Security Checks	2017/12/6	2021/1/14	high
105040	Mozilla Firefox < 57.0.1 多個弱點	Nessus	Windows	2017/12/6	2019/11/12	high
105118	Debian DLA-1202-1：firefox-esr 安全性更新	Nessus	Debian Local Security Checks	2017/12/11	2021/1/11	high
105212	Mozilla Firefox ESR < 52.5.2 多個弱點	Nessus	Windows	2017/12/13	2018/7/16	high
700323	Mozilla Firefox < 57.0.1 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2018/8/21	2019/3/6	low
700333	Mozilla Firefox ESR < 52.5.2 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2018/8/21	2019/11/6	high
700322	Mozilla Firefox < 57 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2018/8/21	2019/3/6	critical

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