CVE-2021-21834
High
Description
An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input when decoding the atom for the “co64” FOURCC 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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Gpac
PublishedAug 25, 2021
First seenAug 25, 2021
Weakness typeCWE-680CWE-680
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gpac gpac | 1.0.1 | — |
| debian debian_linux | 10.0, 11.0 | — |
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