CVE-2024-47540: gstreamer — Fix

Description

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.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-457 CWE-457

CWE-908 CWE-908

Affected Products

Vendor	Product	Versions
gstreamer	gstreamer	< 1.24.10

References

Advisories & Patches

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

Other References

https://gstreamer.freedesktop.org/security/sa-2024-0017.html https://securitylab.github.com/advisories/GHSL-2024-197_GStreamer/ https://lists.debian.org/debian-lts-announce/2025/02/msg00035.html

Frequently Asked Questions

What is CVE-2024-47540? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-47540? +

CVE-2024-47540 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-47540? +

CVE-2024-47540 affects products from gstreamer, specifically: gstreamer. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47540? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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