Use After Free in Ffmpeg
CVE-2020-13904
FFmpeg 2.8 and 4.2.3 has a use-after-free via a crafted EXTINF duration in an m3u8 file because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in libavformat/format.c.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Ffmpeg — versions 2.8, 4.2.3
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- trac.ffmpeg.org/ticket/8673 (Exploit, Issue Tracking, Vendor Advisory)
- patchwork.ffmpeg.org/project/ffmpeg/patch/20200529033905.41926-1-lq@chinaffmpeg…
- www.debian.org/security/2020/dsa-4722 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/07/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4431-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202007-58 (vendor-advisory, Third Party Advisory)
- github.com/FFmpeg/FFmpeg/commit/6959358683c7533f586c07a766acc5fe9544d8b2 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-13904?
- CVE-2020-13904 is a medium-severity vulnerability in Ffmpeg, classified under Use After Free. CVSS score: 5.5/10. Published 2020-06-07.
- How severe is CVE-2020-13904?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-13904 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.