The gmc_mmx function in libavcodec/x86/mpegvideodsp.c in FFmpeg 2.3 and 3.4 does not properly validate widths and heights, which allows remote attackers to cause a denial of service (integer signedness error and out-of-array read) via a crafted MPEG file.

MITRE reports :

Multiple vulnerabilities have been found in FFmpeg. Please refer to CVE list for details.

Note: CVE-2017-15186 and CVE-2017-15672 affect only the 3.3 branch before 3.3.5, CVE-2017-16840 and CVE-2017-17081 have been fixed in 3.4.1. They're listed here for completeness of the record.

This update for ffmpeg fixes the following issues :

Updated ffmpeg to new bugfix release 3.4.2

  - Fix integer overflows, multiplication overflows,     undefined shifts, and verify buffer lengths.

  - avfilter/vf_transpose: Fix used plane count     [boo#1078488, CVE-2018-6392]

  - avcodec/utvideodec: Fix bytes left check in     decode_frame() [boo#1079368, CVE-2018-6621] 

  - Enable use of libzvbi for displaying teletext subtitles.

  - Fixed a DoS in swri_audio_convert() [boo#1072366,     CVE-2017-17555].

Update to new bugfix release 3.4.1

  - Fixed integer overflows, division by zero, illegal bit     shifts

  - Fixed the gmc_mmx function which failed to validate     width and height [boo#1070762, CVE-2017-17081]

  - Fixed out-of-bounds in VC-2 encoder [boo#1069407,     CVE-2017-16840]

  - ffplay: use SDL2 audio API

  - install also doc/ffserver.conf

  - Update to new upstream release 3.4

  - New video filters: deflicker, doublewave, lumakey,     pixscope, oscilloscope, robterts, limiter, libvmaf,     unpremultiply, tlut2, floodifll, pseudocolor, despill,     convolve, vmafmotion.

  - New audio filters: afir, crossfeed, surround, headphone,     superequalizer, haas.

  - Some video filters with several inputs now use a common     set of options: blend, libvmaf, lut3d, overlay, psnr,     ssim. They must always be used by name.

  - librsvg support for svg rasterization

  - spec-compliant VP9 muxing support in MP4

  - Remove the libnut and libschroedinger muxer/demuxer     wrappers

  - drop deprecated qtkit input device (use avfoundation     instead)

  - SUP/PGS subtitle muxer

  - VP9 tile threading support

  - KMS screen grabber

  - CUDA thumbnail filter

  - V4L2 mem2mem HW assisted codecs

  - Rockchip MPP hardware decoding

  - (Not in openSUSE builds, only original ones:)

  - Gremlin Digital Video demuxer and decoder

  - Additional frame format support for Interplay MVE movies

  - Dolby E decoder and SMPTE 337M demuxer

  - raw G.726 muxer and demuxer, left- and right-justified

  - NewTek NDI input/output device

  - FITS demuxer, muxer, decoder and encoder

  - Fixed a double free in huffyuv [boo#1064577,     CVE-2017-15186]

  - Fixed an out-of-bounds in ffv1dec [boo#1066428,     CVE-2017-15672]

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.

ID	Name	Product	Family	Severity
111406	FreeBSD : ffmpeg -- multiple vulnerabilities (5ccbb2f8-c798-11e7-a633-009c02a2ab30)	Nessus	FreeBSD Local Security Checks	critical
106890	openSUSE Security Update : ffmpeg (openSUSE-2018-172)	Nessus	SuSE Local Security Checks	critical
106413	Debian DSA-4099-1 : ffmpeg - security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2017-17081

medium

Tenable Plugins

critical

critical

medium