# Security Advisory 2023-0003 (ZDI-CAN-20994, CVE-2023-37329)

<div class="vertical-table">

|                   |     |
| ----------------- | --- |
| Summary           | Heap overwrite in PGS subtitle overlay decoder |
| Date              | 2023-06-20 18:00 |
| Affected Versions | GStreamer gst-plugins-bad 1.x < 1.22.4, 1.x < 1.20.7, 0.10.x |
| IDs               | GStreamer-SA-2023-0003<br/>ZDI-CAN-20994<br/>CVE-2023-37329 |

</div>

## Details

Heap-based buffer overflow in the PGS blu-ray subtitle decoder when handling certain files in GStreamer versions before 1.22.4 / 1.20.7.

## Impact

It is possible for a malicious third party to trigger a crash in the application, and possibly also effect code execution through heap manipulation.

## Solution

The gst-plugins-bad 1.22.4 / 1.20.7 releases address the issue. People using older branches of GStreamer should apply the patch and recompile.

## References

### The GStreamer project

- [https://gstreamer.freedesktop.org](https://gstreamer.freedesktop.org)

### CVE Database Entries

- [CVE-2023-37329](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-37329)

### GStreamer 1.22.4 release

- [Release Notes](/releases/1.22/#1.22.4)  
- [GStreamer Plugins Bad 1.22.4](/src/gst-plugins-bad/gst-plugins-bad-1.22.4.tar.xz)

### GStreamer 1.20.7 release

- [Release Notes](/releases/1.20/#1.20.7)  
- [GStreamer Plugins Bad 1.20.7](/src/gst-plugins-bad/gst-plugins-bad-1.20.7.tar.xz)

### Patches

- [Patches](https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4896.patch)