#VU69667 Use-after-free in Mujs - CVE-2022-44789
Published: November 29, 2022 / Updated: January 29, 2023
Vulnerability identifier: #VU69667
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2022-44789
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Mujs
Mujs
Software vendor:
Artifex Software, Inc.
Artifex Software, Inc.
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing JavaScript files within the O_getOwnPropertyDescriptor() function. A remote attacker can pass a specially crafted JavaScript file to the application, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install updates from vendor's website.