Out-of-bounds Read in Ffmpeg
CVE-2020-20902
A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.
Vulnerability class: Buffer Overflow
EPSS: 0.012 (64.2th 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:H/I:N/A:N.
Affected products
- Ffmpeg — versions 4.2.1
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-20902?
- CVE-2020-20902 is a medium-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2021-09-20.
- How severe is CVE-2020-20902?
- Medium severity. CVSS v3 base score is 6.5 out of 10.