Buffer Overflow The advisory has been revoked - it doesn't affect any version of package ffmpeg (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2010-FFMPEG-1030155
- published10 Sept 2020
- disclosed19 Sept 2019
Introduced: 19 Sep 2019
CVE-2019-9719 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Ubuntu.
A stack-based buffer overflow in the subtitle decoder in Libav 12.3 allows attackers to corrupt the stack via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c misuses snprintf. NOTE: Third parties dispute that this is a vulnerability because “no evidence of a vulnerability is provided” and only “a generic warning from a static code analysis” is provided
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-9719
- https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L113
- https://github.com/libav/libav/commits/master/libavcodec/srtdec.c
- https://lgtm.com/projects/g/libav/libav/snapshot/f5f553ca3bdca0c97dd08bbf002f0d8cb193788b/files/libavcodec/srtdec.c?sort=name&dir=ASC&mode=heatmap#xeec693aa6d85853b:1
- https://lgtm.com/security/