CVE-2022-1922 – CVE-2022-1922 is an integer overflow vulnerabil... (How to Fix)

Q: What is the severity of CVE-2022-1922?

CVE-2022-1922 has a CVSS score of 7.8 (HIGH). CVE-2022-1922 is an integer overflow vulnerability in GStreamer's Matroska demuxer that can cause denial of service or potential heap overwrite during MKV file processing. The vulnerability occurs during zlib decompression when handling specially crafted MKV files. Systems using GStreamer for media processing are affected.

📋 TL;DR

CVE-2022-1922 is an integer overflow vulnerability in GStreamer's Matroska demuxer that can cause denial of service or potential heap overwrite during MKV file processing. The vulnerability occurs during zlib decompression when handling specially crafted MKV files. Systems using GStreamer for media processing 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, Any OS running GStreamer

Default Config Vulnerable: ⚠️ Yes

Notes: Vulnerability is in the matroskademux element; any application using GStreamer to process MKV files is potentially vulnerable.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Heap overwrite leading to arbitrary code execution, 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 component is not exposed to untrusted MKV files.

🌐 Internet-Facing: MEDIUM - Web applications processing user-uploaded MKV files could be exploited.

🏢 Internal Only: LOW - Requires processing of malicious MKV files, which is less likely in controlled environments.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires crafting a malicious MKV file; complexity depends on libc implementation and OS memory management.

🛠️ 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. 2. For Debian/Ubuntu: apt update && apt upgrade gstreamer1.0. 3. Restart affected applications/services.

🔧 Temporary Workarounds

Disable MKV processing

linux

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

gst-inspect-1.0 --plugin-filters | grep matroska
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 for MKV files; only allow trusted sources.
Use application sandboxing/containerization to limit potential impact of exploitation.

🔍 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:

Segmentation fault logs from applications using GStreamer
Application crashes during MKV file processing

Network Indicators:

Unusual MKV file uploads to media processing services

SIEM Query:

source="application.log" AND ("segfault" OR "SIGSEGV") AND "gstreamer"

📊 Metadata

CVE ID: CVE-2022-1922

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

📤 Share & Export

📄 Export Markdown 📋 Export JSON

🔗 Related Vulnerabilities

If you're affected by CVE-2022-1922, you might also want to check these: