CVE-2021-21842: 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 can cause an integer overflow when processing an atom using the 'ssix' FOURCC code, 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-2021-21842?
CVE-2021-21842 is classified as a high severity vulnerability due to the potential for exploitation via specially crafted MPEG-4 inputs.
How do I fix CVE-2021-21842?
To mitigate CVE-2021-21842, upgrade to GPAC version 0.5.2-426-gc5ad4e4+dfsg5-5, 1.0.1+dfsg1-4+deb11u3, or 2.2.1+dfsg1-3.
What software is affected by CVE-2021-21842?
CVE-2021-21842 affects GPAC Project on Advanced Content library version 1.0.1 and earlier, along with specific Debian Linux versions.
How can CVE-2021-21842 be exploited?
CVE-2021-21842 can be exploited through an integer overflow when processing the 'ssix' FOURCC code in a crafted MPEG-4 file.
Is there a workaround for CVE-2021-21842?
There is no known workaround for CVE-2021-21842 other than applying the recommended software updates.