CVE-2022-1923
Published: 19 July 2022
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
gst-plugins-good1.0
Launchpad, Ubuntu, Debian |
bionic |
Released
(1.14.5-0ubuntu1~18.04.3)
|
| focal |
Released
(1.16.3-0ubuntu1.1)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Released
(1.20.3-0ubuntu1)
|
|
| kinetic |
Not vulnerable
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1.8.3-1ubuntu0.5+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches:
upstream: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/14d306da6da51a762c4dc701d161bb52ab66d774 upstream: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/ad6012159acf18c6b5c0f4edf037e8c9a2dbc966 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |