NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package libav (opens in a new tab)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-DEBIAN8-LIBAV-473031
- published14 Oct 2019
- disclosed14 Oct 2019
Introduced: 14 Oct 2019
CVE-2019-17539 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libav package and not the libav package as distributed by Debian.
In FFmpeg before 4.2, avcodec_open2 in libavcodec/utils.c allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.
References
- https://security-tracker.debian.org/tracker/CVE-2019-17539
- https://www.debian.org/security/2020/dsa-4722
- https://security.gentoo.org/glsa/202003-65
- https://github.com/FFmpeg/FFmpeg/commit/8df6884832ec413cf032dfaa45c23b1c7876670c
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15733
- https://lists.debian.org/debian-lts-announce/2021/01/msg00026.html
- https://usn.ubuntu.com/4431-1/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-17539