CVE-2021-21850

HIGH

GPAC 1.0.1 - Integer Overflow via MPEG-4 'trun' Atom Handling

Title source: llm
STIX 2.1

Description

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 the library encounters an atom using the “trun” 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.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4966

Scores

CVSS v3 8.8
EPSS 0.0158
EPSS Percentile 72.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-190 CWE-680
Status published
Products (2)
debian/debian_linux 11.0
gpac/gpac 1.0.1
Published Aug 25, 2021
Tracked Since Feb 18, 2026