Description

GStreamer is a library for constructing graphs of media-handling components. An OOB-write vulnerability has been identified in the gst_ssa_parse_remove_override_codes function of the gstssaparse.c file. This function is responsible for parsing and removing SSA (SubStation Alpha) style override codes, which are enclosed in curly brackets ({}). The issue arises when a closing curly bracket "}" appears before an opening curly bracket "{" in the input string. In this case, memmove() incorrectly duplicates a substring. With each successive loop iteration, the size passed to memmove() becomes progressively larger (strlen(end+1)), leading to a write beyond the allocated memory bounds. This vulnerability is fixed in 1.24.10.

Classification

CVE ID: CVE-2024-47541

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.9

Affected Products

Vendor: gstreamer

Product: gstreamer

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 21.13% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://securitylab.github.com/advisories/GHSL-2024-228_GStreamer/
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8036.patch
https://gstreamer.freedesktop.org/security/sa-2024-0023.html

Timeline