CVE-2024-47541 GHSL-2024-228: GStreamer has an out-of-bounds write in SSA subtitle parser

Medium 6.9 Published Updated

An out-of-bounds write in GStreamer's SSA subtitle parser allows attackers to execute arbitrary code or cause denial of service via crafted media files.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2024-47541?

CVE-2024-47541 is a medium-severity memory corruption vulnerability in Gstreamer Gstreamer, published on 11 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2024-47541?

It affects 1 product.

Products include Gstreamer Gstreamer.

How do I fix CVE-2024-47541?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-47541 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-47541 exists.

All Gstreamer Gstreamer vulnerabilities

Sources

Also known as ALPINE-CVE-2024-47541, AZL-54288, AZL-54368, AZL-62381, BELL-CVE-2024-47541, DEBIAN-CVE-2024-47541 and 1 more.

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