CVE-2021-21839
8.8
HIGH
CVSS 3.1
EPSS 0.51%
Description
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 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.
How to fix CVE-2021-21839
To remediate CVE-2021-21839, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.1+dfsg1-4+deb11u1 or later
Is CVE-2021-21839 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.0.1+dfsg1-4+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |