CVE-2021-21856

2021-08-1813:15:08

Google

osv.dev

integer overflow

mpeg-4

gpac project

heap-based buffer overflow

memory corruption

video

vulnerability

AI Score

7.3

Confidence

High

EPSS

0.003

Percentile

70.0%

JSON

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 can cause an integer overflow due to unchecked addition 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.