CVE Vulnerabilities

CVE-2018-4022

Use After Free

Published: Oct 26, 2018 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

A use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can cause arbitrary code execution in the context of the current user.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Mkvinfo Mkvtoolnix 25.0.0 (including) 25.0.0 (including)
Mkvtoolnix Ubuntu bionic *
Mkvtoolnix Ubuntu cosmic *
Mkvtoolnix Ubuntu disco *
Mkvtoolnix Ubuntu eoan *
Mkvtoolnix Ubuntu focal *
Mkvtoolnix Ubuntu groovy *
Mkvtoolnix Ubuntu hirsute *
Mkvtoolnix Ubuntu impish *
Mkvtoolnix Ubuntu kinetic *
Mkvtoolnix Ubuntu lunar *
Mkvtoolnix Ubuntu mantic *
Mkvtoolnix Ubuntu oracular *
Mkvtoolnix Ubuntu trusty *
Mkvtoolnix Ubuntu xenial *

Potential Mitigations

References