What is CVE-2021-21852?

CVE-2021-21852 is a high-severity vulnerability in Gpac, classified under Integer Overflow to Buffer Overflow. CVSS score: 8.8/10. Published 2021-08-18.

How severe is CVE-2021-21852?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Gpac

CVE-2021-21852

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 at “stss” decoder 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.

EPSS: 0.020 (78.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Gpac — versions 1.0.1
N/a Gpac" — versions GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304 ,GPAC Project Advanced Content v1.0.1,

Weakness classification (CWE)

References

talos-cna@cisco.com (Technical Description, Exploit, Third Party Advisory)
talos-cna@cisco.com (Technical Description, Exploit, Third Party Advisory, Broken Link)
talos-cna@cisco.com (vendor-advisory)

Frequently asked questions

What is CVE-2021-21852?: CVE-2021-21852 is a high-severity vulnerability in Gpac, classified under Integer Overflow to Buffer Overflow. CVSS score: 8.8/10. Published 2021-08-18.
How severe is CVE-2021-21852?: High severity. CVSS v3 base score is 8.8 out of 10.