Heap-based buffer overflow in Freeware Advanced Audio Decoder - CVE-2021-32277

Vulnerability identifier: #VU63806

CSH Severity: Low

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-32277

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the sbr_qmf_analysis_32() function in sbr_qmf.c. A remote attacker can trick the victim to open a specially crafted data, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Freeware Advanced Audio Decoder
Debian Linux
Ubuntu
faad (Ubuntu package)
libfaad-dev (Ubuntu package)
libfaad2 (Ubuntu package)
faad2 (Debian package)

Install updates from vendor's website.

Freeware Advanced Audio Decoder - update to 2.2.0
faad (Ubuntu package) - addressed in versions Ubuntu Pro, 2.9.1-1ubuntu0.1
libfaad-dev (Ubuntu package) - addressed in versions Ubuntu Pro, 2.9.1-1ubuntu0.1
libfaad2 (Ubuntu package) - addressed in versions Ubuntu Pro, 2.9.1-1ubuntu0.1
faad2 (Debian package) - update to 2.10.0-1~deb10u1

• https://github.com/knik0/faad2/issues/59
• https://lists.debian.org/debian-lts-announce/2021/10/msg00020.html
• https://www.debian.org/security/2022/dsa-5109

• Multiple vulnerabilities in Freeware Advanced Audio Decoder
• Debian update for faad2
• Ubuntu update for faad2