CVE-2021-21837: Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A…

PriorityP347high8.8CVSS 3.1

AVNACLPRNUIRSUCHIHAH

EPSS

2.01%

78.6th percentile

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 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

5 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	gpac	< gpac 1.0.1+dfsg1-4+deb11u1 (bullseye)	gpac 1.0.1+dfsg1-4+deb11u1 (bullseye)
gpac	gpac	—	—
gpac	gpac	—	—
gpac	gpac	>= 0 < 1.0.1+dfsg1-4+deb11u1	1.0.1+dfsg1-4+deb11u1

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

osv8.8HIGH

vendor_debian8.8HIGH

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.