What’s Vulnerable › Vulnerabilities

CVE-2015-6820

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-09-06 · updated 2026-06-17
• Weakness: CWE-119

Description

The ff_sbr_apply function in libavcodec/aacsbr.c in FFmpeg before 2.7.2 does not check for a matching AAC frame syntax element before proceeding with Spectral Band Replication calculations, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted AAC data.

Affected products

• Canonical Ubuntu Linux: 12.04
• FFmpeg: through 2.7.1

References

• http://ffmpeg.org/security.html
• http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=79a98294da6cd85f8c86b34764c5e0c43b09eea3
• http://www.securitytracker.com/id/1033483
• http://www.ubuntu.com/usn/USN-2944-1
• https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html
• http://ffmpeg.org/security.html
• http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=79a98294da6cd85f8c86b34764c5e0c43b09eea3
• http://www.securitytracker.com/id/1033483
• http://www.ubuntu.com/usn/USN-2944-1
• https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html

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