CVE-2021-21856

2021-08-1812:49:59

CWE-680

talos

www.cve.org

integer overflow

mpeg-4 decoding

gpac project

heap-based buffer overflow

memory corruption

video vulnerability

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.003

Percentile

70.0%

JSON

Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow due to unchecked addition 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 vulnerability.

CNA Affected

[
  {
    "product": "GPAC",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304, GPAC Project Advanced Content v1.0.1"
      }
    ]
  }
]