PT-2018-3068 · Freeware+1 · Faad2+1

Fantasy7082 · Published 2018-11-23 · Updated 2025-07-03 · CVE-2018-20194

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 underflow in the calculate gain function, specifically in the third instance of this function in libfaad/sbr hfadj.c. This underflow occurs due to the mishandling of the additional noise energy level when G max is less than or equal to G. A crafted input can lead to a denial of service or possibly other unspecified impacts. The vulnerability may allow an attacker to compromise data integrity, gain unauthorized access to protected information, and cause a denial of service.

Recommendations For Freeware Advanced Audio Decoder 2 (FAAD2) version 2.8.8, as a temporary workaround, consider disabling the calculate gain function until a patch is available. Restrict access to the libfaad/sbr hfadj.c module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Corruption

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-119

Related Identifiers

ALT-PU-2021-1316

ALT-PU-2021-1341

ALT-PU-2023-1579

BDU:2019-03599

CVE-2018-20194

DLA-1791-1

DSA-4522-1

OPENSUSE-SU-2025:15214-1

Affected Products

Alt Linux

Faad2

References · 29

• 🔥 https://github.com/knik0/faad2/issues/21 · Exploit
• https://osv.dev/vulnerability/DLA-1791-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202006-17 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20200429SE81 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20194 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-20194 · Vendor Advisory
• https://debian.org/security/2019/dsa-4522 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20194 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20194 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20194 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15214-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4522-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20194 · Security Note
• https://bdu.fstec.ru/vul/2019-03599 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-20194 · Security Note