PT-2021-6768 · Gpac · Gpac Project On Advanced Content Library

Published 2021-08-18 · Updated 2022-07-29 · CVE-2021-21846

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions GPAC Project on Advanced Content library version 1.0.1

Description The issue is related to multiple exploitable integer overflow vulnerabilities within the MPEG-4 decoding functionality. A specially crafted MPEG-4 input in the "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 issue. The vulnerability allows a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.

Recommendations For GPAC Project on Advanced Content library version 1.0.1, consider disabling the "stsz" decoder functionality until a patch is available to prevent exploitation. Restrict access to the MPEG-4 decoding functionality to minimize the risk of memory corruption. Avoid using the vulnerable library to decode MPEG-4 videos until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Buffer Overflow

Integer Overflow

Weakness Enumeration

CWE-680

CWE-119

CWE-190

Related Identifiers

BDU:2022-02160

CVE-2021-21846

DSA-4966-1

MGASA-2021-0431

Affected Products

Gpac Project On Advanced Content Library

References · 21

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297 · Exploit
• https://osv.dev/vulnerability/DSA-4966-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21846 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-21846 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21846 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0431 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21846 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-21846 · Security Note
• https://bdu.fstec.ru/vul/2022-02160 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21846 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0431.html · Security Note
• https://ubuntu.com/security/CVE-2021-21846 · Vendor Advisory
• https://debian.org/security/2021/dsa-4966 · Vendor Advisory
• https://github.com/gpac/gpac/commit/b515fd04f5f00f4a99df741042f1efb31ad56351 · Note
• https://github.com/gpac/gpac/issues/1814 · Note