CVE-2022-1924 – CVE-2022-1924 is an integer overflow vulnerabil... (How to Fix)

Q: What is the severity of CVE-2022-1924?

CVE-2022-1924 has a CVSS score of 7.8 (HIGH). CVE-2022-1924 is an integer overflow vulnerability in the GStreamer multimedia framework's Matroska demuxer during LZO decompression. This can cause denial of service (segfault) or potentially heap overwrite leading to arbitrary code execution. Systems using GStreamer to process malicious MKV files are affected.

📋 TL;DR

CVE-2022-1924 is an integer overflow vulnerability in the GStreamer multimedia framework's Matroska demuxer during LZO decompression. This can cause denial of service (segfault) or potentially heap overwrite leading to arbitrary code execution. Systems using GStreamer to process malicious MKV files are affected.

💻 Affected Systems

Products:

GStreamer
Applications using GStreamer for MKV processing

Versions: GStreamer versions before 1.20.4

Operating Systems: Linux, Unix-like systems

Default Config Vulnerable: ⚠️ Yes

Notes: Vulnerability manifests when processing MKV files with LZO compression. Impact varies based on libc implementation and OS memory management capabilities.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Heap overwrite leading to arbitrary code execution with the same privileges as the GStreamer process, potentially resulting in full system compromise.

🟠

Likely Case

Denial of service through application crash (segfault) when processing malicious MKV files.

🟢

If Mitigated

No impact if patched or if vulnerable components are not exposed to untrusted MKV files.

🌐 Internet-Facing: MEDIUM - Risk exists if web applications or services process user-uploaded MKV files using GStreamer.

🏢 Internal Only: LOW - Risk limited to internal users intentionally processing malicious MKV files.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires crafting a malicious MKV file with specific LZO compression parameters to trigger the integer overflow.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: GStreamer 1.20.4 and later

Vendor Advisory: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225

Restart Required: Yes

Instructions:

1. Update GStreamer to version 1.20.4 or later using your distribution's package manager. 2. For Debian/Ubuntu: sudo apt update && sudo apt upgrade gstreamer1.0. 3. Restart any services or applications using GStreamer.

🔧 Temporary Workarounds

Disable MKV processing

linux

Prevent GStreamer from processing MKV files by removing or disabling the matroskademux plugin.

sudo mv /usr/lib/gstreamer-1.0/libgstmatroska.so /usr/lib/gstreamer-1.0/libgstmatroska.so.disabled

🧯 If You Can't Patch

Implement strict input validation to reject untrusted MKV files
Run GStreamer processes with reduced privileges and in sandboxed environments

🔍 How to Verify

Check if Vulnerable:

Check GStreamer version: gst-inspect-1.0 --version | grep version

Check Version:

gst-inspect-1.0 --version

Verify Fix Applied:

Verify version is 1.20.4 or later: gst-inspect-1.0 --version

📡 Detection & Monitoring

Log Indicators:

Segfault crashes in GStreamer processes
Application logs showing MKV file processing failures

Network Indicators:

Unusual MKV file uploads to web applications

SIEM Query:

process_name:"gst-launch" AND (event_type:crash OR exit_code:139)

📊 Metadata

CVE ID: CVE-2022-1924

CVSS v3 Score: 7.8 (HIGH)

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

CWE: CWE-122

Published: July 19, 2022

Last Updated: November 21, 2024

🔗 References

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225 Exploit,Issue Tracking,Patch,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html Mailing List,Third Party Advisory
https://www.debian.org/security/2022/dsa-5204 Third Party Advisory
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225 Exploit,Issue Tracking,Patch,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html Mailing List,Third Party Advisory
https://www.debian.org/security/2022/dsa-5204 Third Party Advisory

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🔗 Related Vulnerabilities

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