CVE-2021-21846: Buffer Overflow
Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input in “stsz” decoder 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-2021-21846?
CVE-2021-21846 has been classified as a high severity vulnerability due to the potential for remote code execution via crafted MPEG-4 files.
How do I fix CVE-2021-21846?
To fix CVE-2021-21846, update the GPAC library to version 0.5.2-426-gc5ad4e4+dfsg5-5 or a later version that addresses the vulnerability.
What software versions are affected by CVE-2021-21846?
CVE-2021-21846 affects GPAC versions 1.0.1 and earlier, including specific Debian packages listed in the vulnerability report.
What types of attacks can exploit CVE-2021-21846?
Attackers can exploit CVE-2021-21846 by sending specially crafted MPEG-4 files, which can lead to heap-based buffer overflow and potential code execution.
Is CVE-2021-21846 present in Debian systems?
Yes, CVE-2021-21846 is present in Debian systems running version 10.0 or 11.0 with the affected GPAC versions installed.