CVE-2021-21844

Name of the Vulnerable Software and Affected Versions GPAC Project on Advanced Content library version 1.0.1

Description The issue is related to the MPEG-4 decoding functionality, where a specially crafted MPEG-4 input can cause an integer overflow due to unchecked arithmetic. This results in a heap-based buffer overflow, leading to memory corruption. The vulnerability can be triggered when an atom using the “stco” FOURCC code is encountered. An attacker can exploit this by convincing a user to open a malicious video. The vulnerability allows a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.

Recommendations For GPAC Project on Advanced Content library version 1.0.1, consider disabling the MPEG-4 decoding functionality until a patch is available. Restrict access to videos that could potentially exploit this vulnerability to minimize the risk of memory corruption and data compromise. Avoid using the “stco” FOURCC code in MPEG-4 inputs until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.