Out-of-bounds read in VLC Media Player - CVE-2021-25802
Published: June 20, 2022
Vulnerability identifier: #VU64520
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-25802
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the AVI_ExtractSubtitle component. A remote attacker can create a specially crafted .avi file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Affected software
VLC Media Player
Ubuntu
vlc (Ubuntu package)
vlc-plugin-access-extra (Ubuntu package)
Ubuntu
vlc (Ubuntu package)
vlc-plugin-access-extra (Ubuntu package)
How to mitigate CVE-2021-25802
Install update from vendor's website.
VLC Media Player - update to 3.0.12
vlc (Ubuntu package) - addressed in versions Ubuntu Pro, 3.0.17.4-5ubuntu0.1
vlc-plugin-access-extra (Ubuntu package) - addressed in versions Ubuntu Pro, 3.0.17.4-5ubuntu0.1
vlc (Ubuntu package) - addressed in versions Ubuntu Pro, 3.0.17.4-5ubuntu0.1
vlc-plugin-access-extra (Ubuntu package) - addressed in versions Ubuntu Pro, 3.0.17.4-5ubuntu0.1