Home/CVE/An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on A
CVE

CVE-2021-21861

An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on A

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.

HIGH · CVSS 8.8 EPSS 0.00418
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-680Integer Overflow to Buffer Overflow
CWE-681Incorrect Conversion between Numeric Types
▤

Affected Products & Versions

2
gpacall versions
debian linuxall versions
⚠

Public Exploits & PoCs

1
poctalosintelligence.com · TALOS-2021-1298talosintelligence.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · talos-cna@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Aug 2021 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.debian.org/security/2021/dsa-4966Third Party Advisory
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