Is CVE-2021-38291 in the CISA KEV catalog?

No. CVE-2021-38291 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38291?

CVE-2021-38291 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-38291?

CVE-2021-38291 has an EPSS score of 2.69% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38291?

Upgrade ffmpeg on debian 11 to 7:4.3.3-0+deb11u1 or later. Fixes are available for 37 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38291

HIGHEPSS 84th pctl

7.5

CVSS v3

NVD

Description

FFmpeg version (git commit de8e6e67e7523e48bb27ac224a0b446df05e1640) suffers from a an assertion failure at src/libavutil/mathematics.c.

CWE-617

How to fix

Remediation Available

ffmpegDebian

Fixed in:7:4.3.3-0+deb11u1CVE-2021-38291

Fixed in:7:4.4.1-1CVE-2021-38291

ffmpegUbuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavcodec-extraUbuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavcodec-extra57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavcodec-extra58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

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

libavcodec57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavcodec58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavdevice-ffmpeg56Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavdevice57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavdevice58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavfilter-extra6Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavfilter-extra7Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavfilter-ffmpeg5Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavfilter6Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavfilter7Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavformat-extra58Ubuntu

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavformat-ffmpeg56Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavformat57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavformat58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libavresample-ffmpeg2Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavresample3Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavresample4Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

libavutil-ffmpeg54Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libavutil55Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libavutil56Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libpostproc-ffmpeg53Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libpostproc54Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libpostproc55Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libswresample-ffmpeg1Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libswresample2Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libswresample3Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

libswscale-ffmpeg3Ubuntu

Fixed in:7:2.8.17-0ubuntu0.1+esm4USN-5167-1

libswscale4Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1USN-5472-1

libswscale5Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1USN-5472-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1USN-5472-1

FFmpegWindows application

Affected:4.1.7Fixed in:4.1.7Gyan

Affected:4.2.0 4.2.5Fixed in:4.2.5Gyan

Affected:4.3.0 4.3.3Fixed in:4.3.3Gyan

Affected:4.4.0 4.4.1Fixed in:4.4.1Gyan

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.69%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Patch1

trac.ffmpeg.org

Third-Party Advisory3

Other references1

security.gentoo.org

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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.