Buffer overflow in Ffmpeg

CVE-2020-35964

track_header in libavformat/vividas.c in FFmpeg 4.3.1 has an out-of-bounds write because of incorrect extradata packing.

Vulnerability class: Buffer Overflow

EPSS: 0.015 (72.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Ffmpeg — versions 4.3.1
Linux Linux_kernel
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2020-35964?: CVE-2020-35964 is a medium-severity vulnerability in Ffmpeg, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-01-03.
How severe is CVE-2020-35964?: Medium severity. CVSS v3 base score is 6.5 out of 10.