The remote host is running a version of macOS that is 10.12.x prior to 10.12.4. It is, therefore, affected by multiple vulnerabilities in multiple components, some of which are remote code execution vulnerabilities. An unauthenticated, remote attacker can exploit these remote code execution vulnerabilities by convincing a user to visit a specially crafted website, resulting in the execution of arbitrary code in the context of the current user. The affected components are as follows :

  - apache
  - apache_mod_php
  - AppleGraphicsPowerManagement
  - AppleRAID
  - Audio
  - Bluetooth
  - Carbon
  - CoreGraphics
  - CoreMedia
  - CoreText
  - curl
  - EFI
  - FinderKit
  - FontParser
  - HTTPProtocol
  - Hypervisor
  - iBooks
  - ImageIO
  - Intel Graphics Driver
  - IOATAFamily
  - IOFireWireAVC
  - IOFireWireFamily
  - Kernel
  - Keyboards
  - libarchive
  - libc++abi
  - LibreSSL
  - MCX Client
  - Menus
  - Multi-Touch
  - OpenSSH
  - OpenSSL
  - Printing
  - python
  - QuickTime
  - Security
  - SecurityFoundation
  - sudo
  - System Integrity Protection
  - tcpdump
  - tiffutil
  - WebKit

遠端 OracleVM 系統缺少可解決重大安全性更新的必要修補程式：

  - 修復 (CVE-2016-5652) 的修補程式

  - 相關：#1412078

  - 修復 covscan 發現的 CWE-476 缺陷

  - 相關：#1412078

  - 新增 CVE 的修補程式：

  - CVE-2016-9533 CVE-2016-9534 (CVE-2016-9535)

  - CVE-2016-9536 CVE-2016-9537 (CVE-2016-9540)

  - (CVE-2016-5652)

  - 解決：#1412078

tiff3 受到多個問題影響，會導致使用 libtiff4 的應用程式發生拒絕服務。攻擊者可透過失敗宣告、緩衝區溢位 (兩者皆在讀取和寫入模式中)，將特製的 TIFF 檔案提供給 trigger: abort() 呼叫。CVE-2015-8781 攻擊者可利用 libtiff 中的 tif_luv.c，透過 LogL 壓縮 TIFF 影像中的無效每像素採樣數目，造成拒絕服務問題 (超出邊界寫入)。CVE-2015-8782 攻擊者可利用 libtiff 中的 tif_luv.c，透過特製的 TIFF 影像造成拒絕服務問題 (超出邊界寫入)。CVE-2015-8783 攻擊者可利用 libtiff 中的 tif_luv.c，透過特製的 TIFF 影像造成拒絕服務問題 (超出邊界讀取)。CVE-2015-8784 遠端攻擊者可利用 LibTIFF 中 tif_next.c 的 NeXTDecode 函式，透過特製的 TIFF 影像造成拒絕服務問題 (超出邊界寫入)。CVE-2016-9533 libtiff 4.0.6 中 tif_pixarlog.c 的堆積配置緩衝區存有超出邊界寫入弱點。CVE-2016-9534 libtiff 4.0.6 中 tif_write.c 的 TIFFFlushData1() 錯誤程式碼路徑有問題，它無法重設 tif_rawcc 和 tif_rawcp 成員。CVE-2016-9535 libtiff 4.0.6 中的 tif_predict.h 和 tif_predict.c 存在有問題的宣告，造成在以部分取樣處理如 YCbCr 之類的異常圖塊大小時，會導致在除錯模式中引發宣告失敗，或是在釋放模式中引發緩衝區溢位。針對 Debian 7「Wheezy」，這些問題已在 3.9.6-11+deb7u4 版本中修正。我們建議您升級 tiff3 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。

USN-3212-1 和 USN-3212-2 已修正 LibTIFF 中的弱點。此更新提供 Ubuntu 12.04 ESM 的對應更新子集。據發現，LibTIFF 未正確處理格式錯誤的特定影像。如果使用者或自動化系統遭誘騙而開啟特製影像，遠端攻擊者可能造成應用程式損毀，從而導致拒絕服務，或可能以使用者權限執行任意程式碼。請注意，Tenable Network Security 已直接從 Ubuntu 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。

Numerous security vulnerabilities have been found through fuzzing on various tiff-related binaries. Crafted TIFF images allows remote attacks to cause denial of service or, in certain cases arbitrary code execution through divide-by-zero, out of bunds write, integer and heap overflow.

CVE-2016-3622

The fpAcc function in tif_predict.c in the tiff2rgba tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (divide-by-zero error) via a crafted TIFF image.

CVE-2016-3623

The rgb2ycbcr tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (divide-by-zero) by setting the (1) v or (2) h parameter to 0. (Fixed along with CVE-2016-3624.)

CVE-2016-3624

The cvtClump function in the rgb2ycbcr tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds write) by setting the '-v' option to -1.

CVE-2016-3945

Multiple integer overflows in the (1) cvt_by_strip and (2) cvt_by_tile functions in the tiff2rgba tool in LibTIFF 4.0.6 and earlier, when -b mode is enabled, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image, which triggers an out-of-bounds write.

CVE-2016-3990

Heap-based buffer overflow in the horizontalDifference8 function in tif_pixarlog.c in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image to tiffcp.

CVE-2016-9533

tif_pixarlog.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in heap allocated buffers. Reported as MSVR 35094, aka 'PixarLog horizontalDifference heap-buffer-overflow.'

CVE-2016-9534

tif_write.c in libtiff 4.0.6 has an issue in the error code path of TIFFFlushData1() that didn't reset the tif_rawcc and tif_rawcp members. Reported as MSVR 35095, aka 'TIFFFlushData1 heap-buffer-overflow.'

CVE-2016-9535

tif_predict.h and tif_predict.c in libtiff 4.0.6 have assertions that can lead to assertion failures in debug mode, or buffer overflows in release mode, when dealing with unusual tile size like YCbCr with subsampling. Reported as MSVR 35105, aka 'Predictor heap-buffer-overflow.'

CVE-2016-9536

tools/tiff2pdf.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in heap allocated buffers in t2p_process_jpeg_strip().
Reported as MSVR 35098, aka 't2p_process_jpeg_strip heap-buffer-overflow.'

CVE-2016-9537

tools/tiffcrop.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in buffers. Reported as MSVR 35093, MSVR 35096, and MSVR 35097.

CVE-2016-9538

tools/tiffcrop.c in libtiff 4.0.6 reads an undefined buffer in readContigStripsIntoBuffer() because of a uint16 integer overflow.
Reported as MSVR 35100.

CVE-2016-9540

tools/tiffcp.c in libtiff 4.0.6 has an out-of-bounds write on tiled images with odd tile width versus image width. Reported as MSVR 35103, aka cpStripToTile heap-buffer-overflow.

CVE-2016-10092

heap-buffer-overflow in tiffcrop

CVE-2016-10093 uint32 underflow/overflow that can cause heap-based buffer overflow in tiffcp

CVE-2017-5225

LibTIFF version 4.0.7 is vulnerable to a heap buffer overflow in the tools/tiffcp resulting in DoS or code execution via a crafted BitsPerSample value.

Bug #846837

heap-based buffer verflow in TIFFFillStrip (tif_read.c)

For Debian 7 'Wheezy', these problems have been fixed in version 4.0.2-6+deb7u9.

We recommend that you upgrade your tiff packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

From Red Hat Security Advisory 2017:0225 :

An update for libtiff is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.

Security Fix(es) :

* Multiple flaws have been discovered in libtiff. A remote attacker could exploit these flaws to cause a crash or memory corruption and, possibly, execute arbitrary code by tricking an application linked against libtiff into processing specially crafted files.
(CVE-2016-9533, CVE-2016-9534, CVE-2016-9535)

* Multiple flaws have been discovered in various libtiff tools (tiff2pdf, tiffcrop, tiffcp, bmp2tiff). By tricking a user into processing a specially crafted file, a remote attacker could exploit these flaws to cause a crash or memory corruption and, possibly, execute arbitrary code with the privileges of the user running the libtiff tool. (CVE-2015-8870, CVE-2016-5652, CVE-2016-9540, CVE-2016-9537, CVE-2016-9536)

Security Fix(es) :

  - Multiple flaws have been discovered in libtiff. A remote     attacker could exploit these flaws to cause a crash or     memory corruption and, possibly, execute arbitrary code     by tricking an application linked against libtiff into     processing specially crafted files. (CVE-2016-9533,     CVE-2016-9534, CVE-2016-9535)

  - Multiple flaws have been discovered in various libtiff     tools (tiff2pdf, tiffcrop, tiffcp, bmp2tiff). By     tricking a user into processing a specially crafted     file, a remote attacker could exploit these flaws to     cause a crash or memory corruption and, possibly,     execute arbitrary code with the privileges of the user     running the libtiff tool. (CVE-2015-8870, CVE-2016-5652,     CVE-2016-9540, CVE-2016-9537, CVE-2016-9536)

According to the versions of the libtiff packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Multiple flaws have been discovered in libtiff. A     remote attacker could exploit these flaws to cause a     crash or memory corruption and, possibly, execute     arbitrary code by tricking an application linked     against libtiff into processing specially crafted     files. (CVE-2016-9533, CVE-2016-9534, CVE-2016-9535)

  - Multiple flaws have been discovered in various libtiff     tools (tiff2pdf, tiffcrop, tiffcp, bmp2tiff). By     tricking a user into processing a specially crafted     file, a remote attacker could exploit these flaws to     cause a crash or memory corruption and, possibly,     execute arbitrary code with the privileges of the user     running the libtiff tool. (CVE-2015-8870,     CVE-2016-5652, CVE-2016-9540, CVE-2016-9537,     CVE-2016-9536)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libtiff: Heap-based buffer over-read in bmp2tiff (CVE-2017-9117)

  - LibTIFF prior to 4.0.4, as used in Apple iOS before 8.4 and OS X before 10.10.4 and other products, allows     remote attackers to cause a denial of service (out-of-bounds write) via a crafted TIFF image.
    (CVE-2014-8128)

  - Integer overflow in tools/bmp2tiff.c in LibTIFF before 4.0.4 allows remote attackers to cause a denial of     service (heap-based buffer over-read), or possibly obtain sensitive information from process memory, via     crafted width and length values in RLE4 or RLE8 data in a BMP file. (CVE-2015-8870)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

According to the versions of the compat-libtiff3 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The (1) putcontig8bitYCbCr21tile function in     tif_getimage.c or (2) NeXTDecode function in tif_next.c     in LibTIFF allows remote attackers to cause a denial of     service (uninitialized memory access) via a crafted     TIFF image, as demonstrated by libtiff-cvs-1.tif and     libtiff-cvs-2.tif.(CVE-2014-8127,CVE-2014-8129,CVE-2014
    -8130,CVE-2014-9655)

  - A flaw was discovered in the bmp2tiff utility. By     tricking a user into processing a specially crafted     file, a remote attacker could exploit this flaw to     cause a crash or memory corruption and, possibly,     execute arbitrary code with the privileges of the user     running the libtiff     tool.(CVE-2014-9330,CVE-2015-7554,CVE-2015-8668,CVE-201     5-8665,CVE-2015-8781,CVE-2016-3632,CVE-2016-3945,CVE-20     16-3990,CVE-2016-3991,CVE-2016-5320,CVE-2016-5652,CVE-2     015-8683)

  - tools/tiffcp.c in libtiff has an out-of-bounds write on     tiled images with odd tile width versus image width.
    Reported as MSVR 35103, aka 'cpStripToTile     heap-buffer-overflow.'(CVE-2016-9540)

  - tif_predict.h and tif_predict.c in libtiff have     assertions that can lead to assertion failures in debug     mode, or buffer overflows in release mode, when dealing     with unusual tile size like YCbCr with subsampling.
    Reported as MSVR 35105, aka 'Predictor     heap-buffer-overflow.'(CVE-2016-9535,CVE-2016-9533,CVE-     2016-9534,CVE-2016-9536,CVE-2016-9537)

  - The NeXTDecode function in tif_next.c in LibTIFF allows     remote attackers to cause a denial of service     (uninitialized memory access) via a crafted TIFF image,     as demonstrated by libtiff5.tif.(CVE-2015-1547)

  - The NeXTDecode function in tif_next.c in LibTIFF allows     remote attackers to cause a denial of service     (out-of-bounds write) via a crafted TIFF image, as     demonstrated by libtiff5.tif.(CVE-2015-8784)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

libtiffプロジェクトによる報告:

libtiffライブラリおよびユーティリティで複数の欠陥が発見されました。

libtiff で複数の欠陥が発見されました。リモートの攻撃者が、これらの欠陥を悪用して、クラッシュまたはメモリ破損を引き起こしたり、またおそらくはlibtiffにリンクされたアプリケーションを騙して、特別に細工されたファイルを処理するようにさせて、任意のコードを実行させたりする可能性があります。（CVE-2016-9533、CVE-2016-9534、CVE-2016-9535）いくつかのlibtiffツール（tiff2pdf、tiffcrop、tiffcp、bmp2tiff）で複数の欠陥が発見されました。特別に細工されたファイルを処理するようにユーザーを騙して、リモートの攻撃者がこれらの欠陥を悪用して、クラッシュまたはメモリ破損を引き起こしたり、libtiffツールを実行するユーザーの権限で任意のコードを実行したりする可能性があります。（CVE-2015-8870、CVE-2016-5652、CVE-2016-9540、CVE-2016-9537、CVE-2016-9536）

リモートホストは、10.12.4より前のバージョン10.12.xのmacOSを実行しています。したがって、複数のコンポーネントにある複数の脆弱性の影響を受けます。そのいくつかは、リモートでコードが実行される脆弱性です。認証されていないリモートの攻撃者がこれらのリモートでコードが実行される脆弱性を悪用し、特別に細工されたWebサイトにユーザーを誘導し、カレントユーザーのコンテキストで任意のコードを実行する可能性があります。影響を受けるコンポーネントは、次のとおりです。- apache - apache_mod_php - AppleGraphicsPowerManagement - AppleRAID - オーディオ - Bluetooth - Carbon - CoreGraphics - CoreMedia - CoreText - curl - EFI - FinderKit - FontParser - HTTPProtocol - Hypervisor - iBooks - ImageIO - Intel Graphics Driver - IOATAFamily - IOFireWireAVC - IOFireWireFamily - カーネル - キーボード - libarchive - libc++abi - LibreSSL - MCX Client - Menus - Multi-Touch - OpenSSH - OpenSSL - 印刷 - python - QuickTime - セキュリティ - SecurityFoundation - sudo - System Integrity Protection - tcpdump - tiffutil - WebKit

LibTIFFが不正な形式の特定の画像を不適切に処理していることが判明しました。ユーザーまたは自動システムが誘導されて特別に細工された画像を開くと、リモートの攻撃者がアプリケーションをクラッシュさせ、サービス拒否を引き起こしたり、ユーザー権限で任意のコードを実行したりする可能性があります。

注意: Tenable Network Security は、前述の説明ブロックを Ubuntu セキュリティアドバイザリからすでに直接抽出しています。Tenable では、新たな問題を持ち込まずに、できる限り自動的に整理して書式設定するようにしています。

ID	名稱	產品	系列	已發布	已更新	嚴重性
99134	macOS 10.12.x < 10.12.4 Multiple Vulnerabilities (httpoxy)	Nessus	MacOS X Local Security Checks	2017/3/31	2019/11/13	critical
96946	OracleVM 3.4：libtiff (OVMSA-2017-0036)	Nessus	OracleVM Local Security Checks	2017/2/2	2021/1/4	critical
96947	OracleVM 3.3：libtiff (OVMSA-2017-0037)	Nessus	OracleVM Local Security Checks	2017/2/2	2021/1/4	critical
99107	Debian DLA-880-1：tiff3 安全性更新	Nessus	Debian Local Security Checks	2017/3/31	2021/1/11	critical
101833	Ubuntu 12.04 LTS：tiff 弱點 (USN-3212-3)	Nessus	Ubuntu Local Security Checks	2017/7/20	2023/1/12	critical
96704	Debian DLA-795-1 : tiff security update	Nessus	Debian Local Security Checks	2017/1/24	2021/1/11	critical
96945	Oracle Linux 6 / 7 : libtiff (ELSA-2017-0225)	Nessus	Oracle Linux Local Security Checks	2017/2/2	2021/1/14	critical
96974	Scientific Linux Security Update : libtiff on SL6.x, SL7.x i386/x86_64 (20170201)	Nessus	Scientific Linux Local Security Checks	2017/2/3	2021/1/14	critical
99866	EulerOS 2.0 SP2 : libtiff (EulerOS-SA-2017-1020)	Nessus	Huawei Local Security Checks	2017/5/1	2021/1/6	critical
198475	RHEL 7 : libtiff (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	2024/6/3	2024/6/3	critical
99888	EulerOS 2.0 SP2 : compat-libtiff3 (EulerOS-SA-2017-1043)	Nessus	Huawei Local Security Checks	2017/5/1	2021/4/19	critical
97035	FreeBSD： tiff -- 複数の脆弱性（fb74eacc-ec8a-11e6-bc8a-0011d823eebd）	Nessus	FreeBSD Local Security Checks	2017/2/7	2021/1/4	critical
97554	Amazon Linux AMI：libtiff / compat-libtiff3（ALAS-2017-802）	Nessus	Amazon Linux Local Security Checks	2017/3/7	2018/4/18	critical
99134	macOS 10.12.x < 10.12.4の複数の脆弱性（httpoxy）	Nessus	MacOS X Local Security Checks	2017/3/31	2019/11/13	critical
97434	Ubuntu 14.04 LTS / 16.04 LTS: LibTIFFの脆弱性 (USN-3212-1)	Nessus	Ubuntu Local Security Checks	2017/2/28	2024/8/27	critical

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