CVE-2022-1922: Integer Overflow
First published: Tue Jul 19 2022(Updated: )
DOS / potential heap overwrite in mkv demuxing using zlib decompression. Integer overflow in matroskademux element in gst_matroska_decompress_data function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Gstreamer Project Gstreamer | <1.20.3 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| debian/gst-plugins-good1.0 | <=1.14.4-1+deb10u1 | 1.14.4-1+deb10u3 1.18.4-2+deb11u2 1.22.0-5+deb12u1 1.22.6-1 |
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Reference Links
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225
- https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html
- https://www.debian.org/security/2022/dsa-5204
- https://gstreamer.freedesktop.org/security/sa-2022-0002.html
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/ad6012159acf18c6b5c0f4edf037e8c9a2dbc966
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/fafb028196c78062892261d4e042e646ef8e518b
- https://security-tracker.debian.org/tracker/CVE-2022-1922
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID is CVE-2022-1922.
What is the severity level of CVE-2022-1922?
The severity level of CVE-2022-1922 is high (7.8).
Which software is affected by CVE-2022-1922?
Gstreamer Project Gstreamer (up to version 1.20.3) and Debian Debian Linux (versions 10.0 and 11.0) are affected by CVE-2022-1922.
How can the vulnerability be exploited?
The vulnerability can be exploited through DOS attacks or potential heap overwrites in mkv demuxing using zlib decompression.
How can I fix CVE-2022-1922?
You can fix CVE-2022-1922 by updating the affected software to the specified versions: Gstreamer (1.22.6-1) and Debian Debian Linux (10.0, 11.0, and the specified versions of gst-plugins-good1.0).
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