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。

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）

This update for tiff fixes the following issues :

  - CVE-2016-9453: The t2p_readwrite_pdf_image_tile function     allowed remote attackers to cause a denial of service     (out-of-bounds write and crash) or possibly execute     arbitrary code via a JPEG file with a TIFFTAG_JPEGTABLES     of length one (bsc#1011107).

  - CVE-2016-5652: An exploitable heap-based buffer overflow     existed in the handling of TIFF images in the TIFF2PDF     tool. A crafted TIFF document can lead to a heap-based     buffer overflow resulting in remote code execution.
    Vulnerability can be triggered via a saved TIFF file     delivered by other means (bsc#1007280).

  - CVE-2017-11335: There is a heap-based buffer overflow in     tools/tiff2pdf.c via a PlanarConfig=Contig image, which     caused a more than one hundred bytes out-of-bounds write     (related to the ZIPDecode function in tif_zip.c). A     crafted input may lead to a remote denial of service     attack or an arbitrary code execution attack     (bsc#1048937).

  - CVE-2016-9536: tools/tiff2pdf.c had an 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.'     (bsc#1011845)

  - CVE-2017-9935: In LibTIFF, there was a heap-based buffer     overflow in the t2p_write_pdf function in     tools/tiff2pdf.c. This heap overflow could lead to     different damages. For example, a crafted TIFF document     can lead to an out-of-bounds read in TIFFCleanup, an     invalid free in TIFFClose or t2p_free, memory corruption     in t2p_readwrite_pdf_image, or a double free in     t2p_free. Given these possibilities, it probably could     cause arbitrary code execution (bsc#1046077).

  - CVE-2017-17973: There is a heap-based use-after-free in     the t2p_writeproc function in tiff2pdf.c. (bsc#1074318)

  - CVE-2015-7554: The _TIFFVGetField function in tif_dir.c     allowed attackers to cause a denial of service (invalid     memory write and crash) or possibly have unspecified     other impact via crafted field data in an extension tag     in a TIFF image (bsc#960341).

  - CVE-2016-5318: Stack-based buffer overflow in the
    _TIFFVGetField function allowed remote attackers to     crash the application via a crafted tiff (bsc#983436).

  - CVE-2016-10095: Stack-based buffer overflow in the
    _TIFFVGetField function in tif_dir.c allowed remote     attackers to cause a denial of service (crash) via a     crafted TIFF file (bsc#1017690,).

  - CVE-2016-10268: tools/tiffcp.c allowed remote attackers     to cause a denial of service (integer underflow and     heap-based buffer under-read) or possibly have     unspecified other impact via a crafted TIFF image,     related to 'READ of size 78490' and     libtiff/tif_unix.c:115:23 (bsc#1031255)

  - An overlapping of memcpy parameters was fixed which     could lead to content corruption (bsc#1017691).

  - Fixed an invalid memory read which could lead to a crash     (bsc#1017692).

  - Fixed a NULL pointer dereference in TIFFReadRawData     (tiffinfo.c) that could crash the decoder (bsc#1017688).

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

libtiff project reports :

Multiple flaws have been discovered in libtiff library and utilities.

It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges.

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

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 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.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
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
97434	Ubuntu 14.04 LTS / 16.04 LTS: LibTIFFの脆弱性 (USN-3212-1)	Nessus	Ubuntu Local Security Checks	2017/2/28	2023/10/20	critical
97554	Amazon Linux AMI：libtiff / compat-libtiff3（ALAS-2017-802）	Nessus	Amazon Linux Local Security Checks	2017/3/7	2018/4/18	critical
109674	SUSE SLES11 Security Update : tiff (SUSE-SU-2018:1179-1)	Nessus	SuSE Local Security Checks	2018/5/10	2021/1/19	critical
97035	FreeBSD : tiff -- multiple vulnerabilities (fb74eacc-ec8a-11e6-bc8a-0011d823eebd)	Nessus	FreeBSD Local Security Checks	2017/2/7	2021/1/4	critical
97434	Ubuntu 14.04 LTS / 16.04 LTS : LibTIFF vulnerabilities (USN-3212-1)	Nessus	Ubuntu Local Security Checks	2017/2/28	2023/10/20	critical
97554	Amazon Linux AMI : libtiff / compat-libtiff3 (ALAS-2017-802)	Nessus	Amazon Linux Local Security Checks	2017/3/7	2018/4/18	critical
99889	EulerOS 2.0 SP1 : compat-libtiff3 (EulerOS-SA-2017-1044)	Nessus	Huawei Local Security Checks	2017/5/1	2021/4/19	critical
99134	macOS 10.12.x < 10.12.4 Multiple Vulnerabilities (httpoxy)	Nessus	MacOS X Local Security Checks	2017/3/31	2019/11/13	critical

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