CVE-2023-50120 — MP4Box GPAC version 2

MP4Box GPAC version 2.3-DEV-rev636-gfbd7e13aa-master was discovered to contain an infinite loop in the function av1_uvlc at media_tools/av_parsers.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

01What is this vulnerability?

MP4Box GPAC version 2.3-DEV-rev636-gfbd7e13aa-master was discovered to contain an infinite loop in the function av1_uvlc at media_tools/av_parsers.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-01-10T00:00:00.000Z
• Last modified: 2025-06-17T15:58:50.895Z

09References

• github.com — https://github.com/gpac/gpac/issues/2698