CVE-2021-21861 — HIGH (8.8)

Vulnerability Description

An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. When processing the 'hdlr' FOURCC code, a specially crafted MPEG-4 input can cause an improper memory allocation 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gpac	Gpac	1.0.1
Debian	Debian Linux	11.0

Related Weaknesses (CWE)

CWE-680 CWE-681

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1298ExploitThird Party Advisory
https://www.debian.org/security/2021/dsa-4966Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1298ExploitThird Party Advisory
https://www.debian.org/security/2021/dsa-4966Third Party Advisory

FAQ

What is CVE-2021-21861?

CVE-2021-21861 is a vulnerability with a CVSS score of 8.8 (HIGH). An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. When processing the 'hdlr' FOURCC code, a specia...

How severe is CVE-2021-21861?

CVE-2021-21861 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21861?

Check the references section above for vendor advisories and patch information. Affected products include: Gpac Gpac, Debian Debian Linux.