#VU63804 Heap-based buffer overflow in Freeware Advanced Audio Decoder - CVE-2021-32274

Vulnerability identifier: #VU63804

Vulnerability risk: High

CVSSv4.0: 5.7 [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/E:U/U:Amber]

CVE-ID: CVE-2021-32274

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Freeware Advanced Audio Decoder
Client/Desktop applications / Multimedia software

Vendor: Krzysztof Nikiel

Description

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_synthesis_64() 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Freeware Advanced Audio Decoder: 1.1 - 2.10.0

---

External links
https://github.com/knik0/faad2/issues/60
https://lists.debian.org/debian-lts-announce/2021/10/msg00020.html
https://www.debian.org/security/2022/dsa-5109

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.