CVE-2022-1924

 

Published at: - 19-07-2022 10:15

Last modified: - 26-10-2022 03:45

Total changes: - 5

Description

DOS / potential heap overwrite in mkv demuxing using lzo decompression. Integer overflow in matroskademux element in lzo 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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225
• DSA-5204-Third Party Advisory
• [debian-lts-announce] 20220809 [SECURITY] [DLA 3069-1] gst-plugins-good1.0 security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2022-1924

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures