PT-2021-6467 · Unknown · Gpac Project On Advanced Content Library

Published 2021-05-26 · Updated 2022-07-29 · CVE-2021-21839

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 the absence of result checking for an arithmetic operation in the pcrb decoder functionality of the GPAC multimedia platform's MPEG-4 decoding. This allows a remote attacker to access confidential data, compromise its integrity, and cause a denial of service. 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 trigger this issue by convincing a user to open a malicious video.

Recommendations For GPAC Project on Advanced Content library version 1.0.1, consider updating to a newer version that addresses the integer overflow vulnerabilities in the MPEG-4 decoding functionality. As a temporary workaround, restrict the use of the MPEG-4 decoding functionality until a patch is available. Avoid opening videos from untrusted sources to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Integer Overflow

Weakness Enumeration

CWE-680

CWE-119

CWE-190

Related Identifiers

BDU:2022-01692

CVE-2021-21839

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-2021-21839 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0431 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21839 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21839 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-21839 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-21839 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21839 · Security Note
• https://ubuntu.com/security/CVE-2021-21839 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0431.html · Security Note
• https://bdu.fstec.ru/vul/2022-01692 · Security Note
• 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