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CVE-2018-13305

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the...

8.1 High

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
High

Exploit likelihood

1.41%Up 0.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.1

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
CVE-2018-13305
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 2.0
5.8 MediumAV:N/AC:M/Au:N/C:P/I:N/A:P
Weakness
CWE-125
Updated
2026-11-02
CVE List No score

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
CVE-2018-13305
Updated
2026-11-02
EUVDEUVD-2018-5253 No score

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
EUVD-2018-5253
Updated
2026-11-03
GitHub AdvisoriesGHSA-hj8w-74cf-p23x 8.1

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the...

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
GHSA-hj8w-74cf-p23x
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV 8.1

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
CVE-2018-13305
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-07
OSVUBUNTU-CVE-2018-13305 8.1

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Record
UBUNTU-CVE-2018-13305
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2020:0024-1 No score

Security update for ffmpeg-4

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:

  • CVE-2018-13305: Added a missing check for negative values of mqaunt variable (boo#1100345).
Record
openSUSE-SU-2020:0024-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10754-1 No score

ffmpeg-4-4.4-5.2 on GA media

These are all security issues fixed in the ffmpeg-4-4.4-5.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10754-1
Updated
2026-11-02
OSVSUSE-SU-2018:3609-1 No score

Security update for ffmpeg

This update for ffmpeg fixes the following issues:

  • CVE-2018-13300: An improper argument passed to the avpriv_request_sample function may have triggered an out-of-array read while converting a crafted AVI file to MPEG4, leading to a denial of service and possibly an information disclosure (bsc#1100348)
  • CVE-2018-15822: The flv_write_packet function did not check for an empty audio packet, leading to an assertion failure and DoS (bsc#1105869)
  • CVE-2018-13305: Due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service. (bsc#1100345).
  • CVE-2018-12458: An improper integer type in the mpeg4_encode_gop_header function in libavcodec/mpeg4videoenc.c might have triggered an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service. (bsc#1097983).
Record
SUSE-SU-2018:3609-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
ffmpeg
SUSE:Linux Enterprise Module for Desktop Applications 15
From an advisory covering 4 CVEs
before 3.4.2-4.12.4
3.4.2-4.12.4
ffmpeg
SUSE:Linux Enterprise Module for Package Hub 15
From an advisory covering 4 CVEs
before 3.4.2-4.12.4
3.4.2-4.12.4
ffmpeg
SUSE:Linux Enterprise Workstation Extension 15
From an advisory covering 4 CVEs
before 3.4.2-4.12.4
3.4.2-4.12.4
oxide-qt
Ubuntu:16.04:LTS
All versions, plus listed versions
1.9.5-0ubuntu11.10.3-0ubuntu0.15.10.11.10.3-0ubuntu0.15.10.21.11.3-0ubuntu31.11.4-0ubuntu1
Show 17 moreShow less
1.11.5-0ubuntu11.12.5-0ubuntu11.12.6-0ubuntu11.12.7-0ubuntu11.13.6-0ubuntu11.14.7-0ubuntu11.14.9-0ubuntu0.16.04.11.15.7-0ubuntu0.16.04.11.15.8-0ubuntu0.16.04.11.16.5-0ubuntu0.16.04.11.17.7-0ubuntu0.16.04.11.17.9-0ubuntu0.16.04.11.18.3-0ubuntu0.16.04.11.18.5-0ubuntu0.16.04.11.19.4-0ubuntu0.16.04.11.20.4-0ubuntu0.16.04.11.21.5-0ubuntu0.16.04.1
None known
gst-libav1.0
Ubuntu:16.04:LTS
All versions, plus listed versions
1.6.0-11.6.0-21.6.1-11.6.2-11.7.1-1
Show 7 moreShow less
1.7.2-11.7.90-11.8.0-11.8.1-1~ubuntu11.8.2-1~ubuntu11.8.3-1ubuntu0.11.8.3-1ubuntu0.2
None known
mythtv
Ubuntu:16.04:LTS
All versions, plus listed versions
2:0.27.1+fixes.20140624.aa822f5-0ubuntu62:0.27.1+fixes.20140624.aa822f5-0ubuntu72:0.27.1+fixes.20140624.aa822f5-0ubuntu92:0.28.0+fixes.20160217.44fd8a6-0ubuntu42:0.28.0+fixes.20160229.ae35a28-0ubuntu1
Show 6 moreShow less
2:0.28.0+fixes.20160321.39e409d-0ubuntu12:0.28.0+fixes.20160321.39e409d-0ubuntu22:0.28.0+fixes.20160325.2520617-0ubuntu32:0.28.0+fixes.20160413.15cf421-0ubuntu12:0.28.0+fixes.20160413.15cf421-0ubuntu22:0.28.0+fixes.20160413.15cf421-0ubuntu2.16.04.1
None known
gst-libav1.0
Ubuntu:18.04:LTS
All versions, plus listed versions
1.12.2-11.12.3-11.12.4-11.13.91-11.14.0-11.14.1-1~ubuntu18.04.11.14.4-0ubuntu1~ubuntu18.04.11.14.5-0ubuntu1~18.04.1
None known
mythtv
Ubuntu:18.04:LTS
All versions, plus listed versions
2:29.0+fixes.20170728.696806310a-0ubuntu12:29.0+fixes.20170728.696806310a-0ubuntu32:29.0+fixes.20170728.696806310a-0ubuntu42:29.0+fixes.20170728.696806310a-0ubuntu52:29.0+fixes.20170728.696806310a-0ubuntu6
Show 5 moreShow less
2:29.0+fixes.20170728.696806310a-0ubuntu72:29.0+fixes.20170728.696806310a-0ubuntu82:29.1+fixes.20180220.9b7b962-0ubuntu22:29.1+fixes.20180220.9b7b962-0ubuntu32:29.1+fixes.20180414.329c235-0ubuntu3
None known
gst-libav1.0
Ubuntu:20.04:LTS
All versions, plus listed versions
1.16.1-11.16.2-11.16.2-2
None known
mythtv
Ubuntu:20.04:LTS
All versions, plus listed versions
2:30.0+fixes.20190817.5cde0578d8-0ubuntu12:30.0+fixes.20190817.5cde0578d8-0ubuntu22:30.0+fixes.20190817.5cde0578d8-0ubuntu32:31.0+fixes.20200207.35cb9ed0c5-0ubuntu22:31.0+fixes.20200323.9579662cdc-0ubuntu1
None known
Show 20 moreShow less
Affected packages
PackageAffectedFixed
chromium-browser
Ubuntu:22.04:LTS
All versions, plus listed versions
1:85.0.4183.83-0ubuntu21:85.0.4183.83-0ubuntu2.22.04.1
None known
gst-libav1.0
Ubuntu:22.04:LTS
All versions, plus listed versions
1.18.5-11.20.0-11.20.1-11.20.3-0ubuntu1
None known
mythtv
Ubuntu:22.04:LTS
All versions, plus listed versions
2:31.0+fixes.20200323.9579662cdc-0ubuntu92:31.0+fixes.20200323.9579662cdc-0ubuntu112:32.0+fixes.20220224.56275b303b-0ubuntu32:32.0+fixes.20220224.56275b303b-0ubuntu52:32.0+fixes.20220325.f69ce764b7-0ubuntu1
None known
chromium-browser
Ubuntu:24.04:LTS
All versions, plus listed versions
1:85.0.4183.83-0ubuntu32:1snap1-0ubuntu12:1snap1-0ubuntu2
None known
gst-libav1.0
Ubuntu:24.04:LTS
All versions, plus listed versions
1.22.5-11.22.6-11.22.7-11.22.8-11.22.10-11.24.1-11.24.1-1build1
None known
mythtv
Ubuntu:24.04:LTS
All versions, plus listed versions
2:33.0+fixes.20230210.026e506-0ubuntu02:33.0+fixes.20230210.026e506-0ubuntu22:33.0+fixes.20230210.026e506-0ubuntu32:33.0+fixes.20230210.026e506-0ubuntu42:33.0+fixes.20230210.026e506-0ubuntu5
Show 4 moreShow less
2:34.0+fixes.20240210.e3e165a1-0ubuntu12:34.0+fixes.20240210.e3e165a1-0ubuntu42:34.0+fixes.20240210.e3e165a1-0ubuntu52:34.0+fixes.20240210.e3e165a1-0ubuntu6
None known
chromium-browser
Ubuntu:25.10
All versions, plus listed versions
2:1snap1-0ubuntu3
None known
gst-libav1.0
Ubuntu:25.10
All versions, plus listed versions
1.26.0-11.26.1-11.26.2-11.26.3-11.26.4-11.26.5-11.26.6-1
None known
mythtv
Ubuntu:25.10
All versions, plus listed versions
2:35.0+fixes.20250302.f3f012aa3f-0ubuntu32:35.0+fixes.20250302.f3f012aa3f-0ubuntu4
None known
chromium-browser
Ubuntu:26.10
All versions, plus listed versions
2:1snap1-0ubuntu4
None known
gst-libav1.0
Ubuntu:26.10
All versions, plus listed versions
1.28.2-11.28.3-11.28.4-1build11.28.5-11.28.6-11.28.7-1
None known
mythtv
Ubuntu:26.10
All versions, plus listed versions
2:36.0+fixes.20260401.1385cbfc60-0ubuntu12:36.0+fixes.20260401.1385cbfc60-0ubuntu3
None known
chromium-browser
Ubuntu:26.04:LTS
All versions, plus listed versions
2:1snap1-0ubuntu32:1snap1-0ubuntu4
None known
gst-libav1.0
Ubuntu:26.04:LTS
All versions, plus listed versions
1.26.6-11.27.2-11.27.2-1build11.27.90-11.28.0-11.28.1-11.28.2-1
None known
mythtv
Ubuntu:26.04:LTS
All versions, plus listed versions
2:35.0+fixes.20250302.f3f012aa3f-0ubuntu42:35.0+fixes.20250302.f3f012aa3f-0ubuntu52:35.0+fixes.20250302.f3f012aa3f-0ubuntu62:35.0+fixes.20250302.f3f012aa3f-0ubuntu72:36.0+fixes.20260210.a312d68f-0ubuntu12:36.0+fixes.20260401.1385cbfc60-0ubuntu1
None known
ffmpeg-4
SUSE:Package Hub 12 SP2
From an advisory covering 5 CVEs
before 4.2.1-bp151.5.3.1
4.2.1-bp151.5.3.1
ffmpeg-4
SUSE:Package Hub 15
From an advisory covering 5 CVEs
before 4.2.1-bp151.5.3.1
4.2.1-bp151.5.3.1
ffmpeg-4
SUSE:Package Hub 15 SP1
From an advisory covering 5 CVEs
before 4.2.1-bp151.5.3.1
4.2.1-bp151.5.3.1
ffmpeg-4
openSUSE:Leap 15.1
From an advisory covering 5 CVEs
before 4.2.1-bp151.5.3.1
4.2.1-bp151.5.3.1
ffmpeg-4
openSUSE:Tumbleweed
From an advisory covering 46 CVEs
before 4.4-5.2
4.4-5.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-13305 is a high vulnerability (CVSS 8.1) in Ffmpeg, published July 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. No source names a fixed version.

References

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