PT-2021-6761 · Gpac · Gpac

Published 2021-08-25 · Updated 2022-07-29 · CVE-2021-21836

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 versions 1.0.1

Description The issue is related to an integer overflow in the MPEG-4 decoding functionality of the GPAC library, specifically with the "ctts" FOURCC code. This overflow is caused by unchecked arithmetic, resulting in a heap-based buffer overflow that leads to memory corruption. An attacker can exploit this issue by convincing a user to open a specially crafted video, potentially allowing remote access to confidential data, disruption of data integrity, and denial of service.

Recommendations For GPAC version 1.0.1, consider disabling the "ctts" decoding functionality until a patch is available to prevent potential exploitation. Restrict access to videos that could trigger this vulnerability to minimize the risk of memory corruption and subsequent attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Integer Overflow

Weakness Enumeration

CWE-119

CWE-680

CWE-190

Related Identifiers

BDU:2022-02153

CVE-2021-21836

DSA-4966-1

MGASA-2021-0431

Affected Products

Gpac

References · 17

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297 · Exploit
• https://bdu.fstec.ru/vul/2022-02153 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-21836 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4966-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21836 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0431 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21836 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21836 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21836 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-21836 · Security Note
• https://debian.org/security/2021/dsa-4966 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0431.html · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21836 · Vendor Advisory
• https://github.com/gpac/gpac/commit/b515fd04f5f00f4a99df741042f1efb31ad56351 · Note
• https://github.com/gpac/gpac/issues/1814 · Note