SB2022112905 - Denial of service in Artifex MuJS

Description

This security bulletin contains information about 2 vulnerabilities.

1) Uncontrolled Recursion (CVE-ID: CVE-2022-30974)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a regular expression denial of service (DoS) attack.

The vulnerability exists due to unlimited recursion within the compile() function in regexp.cc. A remote attacker can pass a specially crafted string to the application and consume all available CPU resources on the system.

2) NULL pointer dereference (CVE-ID: CVE-2022-30975)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the jsP_dumpsyntax() function in jsdump.c. A remote attacker can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://github.com/ccxvii/mujs/issues/162
• https://github.com/ccxvii/mujs/issues/161