What’s Vulnerable › Vulnerabilities

CVE-2018-7557

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-28 · updated 2026-06-17
• Weakness: CWE-125

Description

The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

Affected products

• Debian Linux: 8.0, 9.0
• FFmpeg: from 2.8 through 3.4.2

References

• https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
• https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae
• https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
• https://security.gentoo.org/glsa/202003-65
• https://www.debian.org/security/2018/dsa-4249
• https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
• https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae
• https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
• https://security.gentoo.org/glsa/202003-65
• https://www.debian.org/security/2018/dsa-4249

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