CVE-2021-21841: Buffer Overflow
An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input when reading an atom using the 'sbgp' FOURCC code can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-21841?
CVE-2021-21841 is classified as a critical vulnerability due to its potential for exploitation through crafted MPEG-4 files.
How do I fix CVE-2021-21841?
To mitigate CVE-2021-21841, upgrade to the patched versions of GPAC, specifically version 0.5.2-426-gc5ad4e4+dfsg5-5 or later.
Which versions of GPAC are affected by CVE-2021-21841?
CVE-2021-21841 affects GPAC version 1.0.1 and potentially earlier versions.
What causes the vulnerability in CVE-2021-21841?
CVE-2021-21841 is caused by an integer overflow in the MPEG-4 decoding functionality due to unchecked arithmetic operations.
Can CVE-2021-21841 be exploited remotely?
Yes, CVE-2021-21841 can be exploited remotely by supplying specially crafted MPEG-4 files to a vulnerable system.