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CVE-2021-21841

Published: 25 August 2021

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 when reading an atom using the 'sbgp' FOURCC code 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.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
gpac
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
impish Ignored
(end of life)
trusty Needs triage

bionic Needs triage

focal Needs triage

upstream Needs triage

kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

xenial Needs triage

mantic Does not exist

lunar Ignored
(end of life, was needs-triage)

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H