CVE-2024-47540: GHSL-2024-197: GStreamer uses uninitialized stack memory in Matroska/WebM demuxer

First published: Wed Dec 11 2024(Updated: )

GStreamer is a library for constructing graphs of media-handling components. An uninitialized stack variable vulnerability has been identified in the gst_matroska_demux_add_wvpk_header function within matroska-demux.c. When size < 4, the program calls gst_buffer_unmap with an uninitialized map variable. Then, in the gst_memory_unmap function, the program will attempt to unmap the buffer using the uninitialized map variable, causing a function pointer hijack, as it will jump to mem->allocator->mem_unmap_full or mem->allocator->mem_unmap. This vulnerability could allow an attacker to hijack the execution flow, potentially leading to code execution. This vulnerability is fixed in 1.24.10.

Credit: security-advisories@github.com security-advisories@github.com

Affected Software	Affected Version	How to fix
debian/gst-plugins-good1.0	<=1.18.4-2+deb11u2<=1.22.0-5+deb12u1	1.24.10-1
Gstreamer Project Gstreamer	<1.24.10

Remedy

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8057.patch

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