Several vulnerabilities have been discovered in the FFmpeg multimedia framework, which could result in denial of service or potentially the execution of arbitrary code if malformed files/streams are processed.

It was discovered that FFmpeg contained multiple security issues when handling certain multimedia files. If a user were tricked into opening a crafted multimedia file, an attacker could cause a denial of service via application crash.

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.

This update for ffmpeg-4 fixes the following issues :

ffmpeg-4 was updated to version 4.0.5, fixes boo#1133153 

  - CVE-2019-11339: The studio profile decoder in     libavcodec/mpeg4videodec.c in FFmpeg 4.0 allowed remote     attackers to cause a denial of service (out-of-array     access) or possibly have unspecified. (bsc#1133153)

  - For other changes see     /usr/share/doc/packages/libavcodec58/Changelog

Update to version 4.2.1 :

  - Stable bug fix release, mainly codecs and format fixes.

  - CVE-2019-15942: Conditional jump or move depends on     uninitialised value' issue in h2645_parse (boo#1149839)

Update to FFmpeg 4.2 'Ada'

  - tpad filter

  - AV1 decoding support through libdav1d

  - dedot filter

  - chromashift and rgbashift filters

  - freezedetect filter

  - truehd_core bitstream filter

  - dhav demuxer

  - PCM-DVD encoder

  - GIF parser

  - vividas demuxer

  - hymt decoder

  - anlmdn filter

  - maskfun filter

  - hcom demuxer and decoder

  - ARBC decoder

  - libaribb24 based ARIB STD-B24 caption support (profiles     A and C)

  - Support decoding of HEVC 4:4:4 content in nvdec and     cuviddec

  - removed libndi-newtek

  - agm decoder

  - KUX demuxer

  - AV1 frame split bitstream filter

  - lscr decoder

  - lagfun filter

  - asoftclip filter

  - Support decoding of HEVC 4:4:4 content in vdpau

  - colorhold filter

  - xmedian filter

  - asr filter

  - showspatial multimedia filter

  - VP4 video decoder

  - IFV demuxer

  - derain filter

  - deesser filter

  - mov muxer writes tracks with unspecified language     instead of English by default

  - added support for using clang to compile CUDA kernels

  - See /usr/share/doc/packages/ffmpeg-4/Changelog for the     complete changelog.

Update to version 4.1.4

  - See /usr/share/doc/packages/ffmpeg-4/Changelog for the     complete changelog.

  - Enable runtime enabling for fdkaac via
    --enable-libfdk-aac-dlopen

Update to version 4.1.3 :

  - Updates and bug fixes for codecs, filters and formats.
    [boo#1133153, boo#1133155, CVE-2019-11338,     CVE-2019-11339]

Update to version 4.1.2 :

  - Updates and bug fixes for codecs, filters and formats.

Update to version 4.1.1 :

  - Various filter and codec fixes and enhancements.

  - configure: Add missing xlib dependency for VAAPI X11     code.

  - For complete changelog, see     /usr/share/doc/packages/ffmpeg-4/Changelog

  - enable AV1 support on x86_64

Update ffmpeg to 4.1 :

  - Lots of filter updates as usual: deblock, tmix, aplify,     fftdnoiz, aderivative, aintegral, pal75bars, pal100bars,     adeclick, adeclip, lensfun (wrapper), colorconstancy, 1D     LUT filter (lut1d), cue, acue, transpose_npp, amultiply,     Block-Matching 3d (bm3d) denoising filter, acrossover     filter, audio denoiser as afftdn filter, sinc audio     filter source, chromahold, setparams, vibrance, xstack,     (a)graphmonitor filter yadif_cuda filter.

  - AV1 parser

  - Support for AV1 in MP4

  - PCM VIDC decoder and encoder

  - libtensorflow backend for DNN based filters like srcnn

  - -- The following only enabled in third-party builds :

  - ATRAC9 decoder

  - AVS2 video decoder via libdavs2

  - IMM4 video decoder

  - Brooktree ProSumer video decoder

  - MatchWare Screen Capture Codec decoder

  - WinCam Motion Video decoder

  - RemotelyAnywhere Screen Capture decoder

  - AVS2 video encoder via libxavs2

  - ILBC decoder

  - SER demuxer

  - Decoding S12M timecode in H264

  - For complete changelog, see     https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.1

Update ffmpeg to 4.0.3 :

  - For complete changelog, see     https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.0.3

  - CVE-2018-13305: Added a missing check for negative     values of mqaunt variable (boo#1100345).

It was discovered that FFmpeg incorrectly verified empty audio packets or HEVC data. An attacker could possibly use this issue to cause a denial of service via a crafted file. This issue only affected Ubuntu 16.04 LTS, as it was already fixed in Ubuntu 18.04 LTS. For more information see: https://usn.ubuntu.com/usn/usn-3967-1 (CVE-2018-15822, CVE-2019-11338) It was discovered that FFmpeg incorrectly handled sscanf failures. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.
This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2019-12730) It was discovered that FFmpeg incorrectly handled certain WEBM files. An attacker could possibly use this issue to obtain sensitive data or other unspecified impact. This issue only affected Ubuntu 20.04 LTS. (CVE-2019-13312) It was discovered that FFmpeg incorrectly handled certain AVI files. An attacker could possibly use this issue to cause a denial of service or other unspecified impact. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-13390) It was discovered that FFmpeg incorrectly handled certain input. An attacker could possibly use this issue to cause a denial of service or other unspecified impact. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-17539) It was discovered that FFmpeg incorrectly handled certain input during decoding of VQA files. An attacker could possibly use this issue to obtain sensitive information or other unspecified impact. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-17542) It was discovered that FFmpeg incorrectly handled certain JPEG files.
An attacker could possibly use this issue to obtain sensitive information or other unspecified impact. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-12284) It was discovered that FFmpeg incorrectly handled certain M3U8 files. An attacker could possibly use this issue to obtain sensitive information or other unspecified impact. (CVE-2020-13904).

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.

Two more security issues have been corrected in multiple demuxers and decoders of the libav multimedia library.

CVE-2018-15822

The flv_write_packet function in libavformat/flvenc.c in libav did not check for an empty audio packet, leading to an assertion failure.

CVE-2019-11338

libavcodec/hevcdec.c in libav mishandled detection of duplicate first slices, which allowed remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

For Debian 8 'Jessie', these problems have been fixed in version 6:11.12-1~deb8u7.

We recommend that you upgrade your libav 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.

ID	Name	Product	Family	Published	Updated	Severity
125344	Debian DSA-4449-1 : ffmpeg - security update	Nessus	Debian Local Security Checks	5/23/2019	1/15/2020	high
124678	Ubuntu 18.04 LTS : FFmpeg vulnerabilities (USN-3967-1)	Nessus	Ubuntu Local Security Checks	5/7/2019	10/21/2023	high
132910	openSUSE Security Update : ffmpeg-4 (openSUSE-2020-24)	Nessus	SuSE Local Security Checks	1/15/2020	3/29/2024	high
138875	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : FFmpeg vulnerabilities (USN-4431-1)	Nessus	Ubuntu Local Security Checks	7/23/2020	10/21/2023	critical
125555	Debian DLA-1809-1 : libav security update	Nessus	Debian Local Security Checks	5/30/2019	5/17/2024	high

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