CVE & CISA-KEV Catalog

CVE-2020-20902

MEDIUM
6.5
CVSS v3
NVD

Description

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.

How to fix

Remediation Available
ffmpegDebian
Fixed in:7:4.2.2-1CVE-2020-20902
Fixed in:7:4.2.2-1CVE-2020-20902
Fixed in:7:4.2.2-1CVE-2020-20902
Fixed in:7:4.2.2-1CVE-2020-20902
ffmpegUbuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavcodec-extraUbuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavcodec-ffmpeg-extra56Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavcodec-ffmpeg56Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavdevice-ffmpeg56Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavfilter-ffmpeg5Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavformat-ffmpeg56Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavresample-ffmpeg2Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libavutil-ffmpeg54Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libpostproc-ffmpeg53Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libswresample-ffmpeg1Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1
libswscale-ffmpeg3Ubuntu
Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

1.13%probability of exploitation in 30 days
63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Other references1

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2014-0160High7.5100%KEVFix
CVE-2025-5777High7.5100%KEV + RansomFix
CVE-2021-4034High7.895%KEVFix
CVE-2023-21769High7.592%-Fix
CVE-2023-49285High8.689%-Fix
CVE-2020-8794Critical9.889%-Fix
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CVE-2020-20902 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.