NULL pointer dereference in Freeware Advanced Audio Decoder - CVE-2018-20198
Published: December 20, 2018
Vulnerability identifier: #VU16634
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-20198
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to a NULL pointer dereference in ifilter_bank of libfaad/filtbank.c. A local attacker can submit trigger a segmentation fault that causes the affected software to crash, resulting in a DoS condition because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.
Affected software
Freeware Advanced Audio Decoder
Gentoo Linux
faad2 (Alpine package)
Gentoo Linux
faad2 (Alpine package)
How to mitigate CVE-2018-20198
Cybersecurity Help is currently unaware of any official solution to address the vulnerability.
faad2 (Alpine package) - update to 2.9.0-r0