CVE-2022-1923: Integer Overflow
First published: Tue Jul 19 2022(Updated: )
DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression 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-2022-1923
Frequently Asked Questions
What is the severity of CVE-2022-1923?
The severity of CVE-2022-1923 is high with a CVSS score of 7.8.
How does CVE-2022-1923 impact Gstreamer Project Gstreamer?
CVE-2022-1923 can cause a denial of service (DOS) or potential heap overwrite in mkv demuxing using bzip decompression in Gstreamer Project Gstreamer before version 1.20.3.
How does CVE-2022-1923 impact Debian Debian Linux 10.0?
CVE-2022-1923 can cause a denial of service (DOS) or potential heap overwrite in mkv demuxing using bzip decompression in Debian Debian Linux 10.0.
How does CVE-2022-1923 impact Debian Debian Linux 11.0?
CVE-2022-1923 can cause a denial of service (DOS) or potential heap overwrite in mkv demuxing using bzip decompression in Debian Debian Linux 11.0.
How can I fix CVE-2022-1923?
To fix CVE-2022-1923, upgrade Gstreamer Project Gstreamer to version 1.20.3 or later, or update to the recommended versions of gst-plugins-good1.0 on Debian Debian Linux.
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