CVE-2021-21840: 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 used to process an atom using the “saio” FOURCC code 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-2021-21840?
CVE-2021-21840 is considered to have a medium severity level due to the potential for integer overflow in image processing.
How do I fix CVE-2021-21840?
To fix CVE-2021-21840, update the GPAC project to version 0.5.2-426-gc5ad4e4+dfsg5-5 or later.
Which versions of GPAC are affected by CVE-2021-21840?
CVE-2021-21840 affects GPAC version 1.0.1 and earlier versions.
What type of vulnerability is CVE-2021-21840?
CVE-2021-21840 is an integer overflow vulnerability found in the MPEG-4 decoding functionality.
Is CVE-2021-21840 exploitable remotely?
Yes, CVE-2021-21840 can be exploited remotely through specially crafted MPEG-4 files.