PT-2018-3820 · Freeware+2 · Faad2+2

Fantasy7082 · Published 2018-12-17 · Updated 2025-07-03 · CVE-2018-20196

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Freeware Advanced Audio Decoder 2 (FAAD2) version 2.8.8

Description The issue is related to a stack-based buffer overflow in the calculate gain function within the libfaad/sbr hfadj.c component of the Freeware Advanced Audio Decoder 2 (FAAD2). This overflow occurs due to the mishandling of the S M array. A crafted input can lead to a denial of service or potentially other unspecified impacts. Additionally, the vulnerability can be exploited by a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.

Recommendations For Freeware Advanced Audio Decoder 2 (FAAD2) version 2.8.8, consider applying a patch or update that fixes the calculate gain function in libfaad/sbr hfadj.c to prevent the stack-based buffer overflow. As a temporary workaround, restrict the use of the calculate gain function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2021-1316

ALT-PU-2021-1341

ALT-PU-2023-1579

BDU:2022-05766

CVE-2018-20196

DLA-1899-1

DSA-4522-1

DSA-5109-1

OPENSUSE-SU-2025:15214-1

Affected Products

Alt Linux

Astra Linux

Faad2

References · 31

• 🔥 https://github.com/knik0/faad2/issues/19 · Exploit
• https://osv.dev/vulnerability/ALPINE-CVE-2018-20196 · Vendor Advisory
• https://debian.org/security/2022/dsa-5109 · Vendor Advisory
• https://security.gentoo.org/glsa/202006-17 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-05766 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2025:15214-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20196 · Security Note
• https://osv.dev/vulnerability/DSA-5109-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4522-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20196 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20196 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20196 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20196 · Vendor Advisory