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5.5

GPAC Media Parser: Heap Overflow Risk from Malicious Video Files

CVE-2021-30020 · published 5 years ago
Summary

A bug in GPAC's media parser could cause a memory overflow when processing specially crafted video files. This could potentially allow an attacker to execute arbitrary code on a vulnerable system. To mitigate this risk, update to a patched version of GPAC or apply the recommended fix.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
gpac gpac 1.0.1
cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*
Original advisory text
In the function gf_hevc_read_pps_bs_internal function in media_tools/av_parsers.c in GPAC 1.0.1 there is a loop, which with crafted file, pps->num_tile_columns may be larger than sizeof(pps->column...
In the function gf_hevc_read_pps_bs_internal function in media_tools/av_parsers.c in GPAC 1.0.1 there is a loop, which with crafted file, pps->num_tile_columns may be larger than sizeof(pps->column_width), which results in a heap overflow in the loop.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published19 Apr 2021
Updated3 Nov 2026
First seen11 Apr 2026
Sources
CVE-2021-30020 · OSV
CVE-2021-30020 · NVD
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