Buffer overflow in Ffmpeg
CVE-2020-35965
decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in calculations of when to perform memset zero operations.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: +0.000
Affected products
- Ffmpeg
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FFmpeg/FFmpeg/commit/b0a8b40294ea212c1938348ff112ef1b9bf16bb3 (Patch, Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Third Party Advisory, Issue Tracking)
- github.com/FFmpeg/FFmpeg/commit/3e5959b3457f7f1856d997261e6ac672bba49e8b (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/01/msg00026.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202105-24 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2021/dsa-4990 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-35965?
- CVE-2020-35965 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-01-04.
- How severe is CVE-2020-35965?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-35965 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.