Uncontrolled Recursion in Mujs - CVE-2019-11413

Vulnerability identifier: #VU69663

CSH Severity: Medium

CVSSv4.0: 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

CVE-ID: CVE-2019-11413

CWE-ID: CWE-674

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Mujs

Software vendor:
Artifex Software, Inc.

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 match() function in regexp.c. A remote attacker can pass a specially crafted string to the application and consume all available CPU resources on the system.

Install updates from vendor's website.

• http://www.ghostscript.com/cgi-bin/findgit.cgi?00d4606c3baf813b7b1c176823b2729bf51002a2
• http://www.securityfocus.com/bid/108093
• https://bugs.ghostscript.com/show_bug.cgi?id=700937
• https://github.com/ccxvii/mujs/commit/00d4606c3baf813b7b1c176823b2729bf51002a2
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3RQXMWEOWCGLOLFBQSXBM3MBN33T4I5H/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/67PMOZV4DLVL2KGU2SV724QL7Y4PKWKU/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MFCRO74ORRIVWNVAX2MAMRY3THCTWLQI/
• https://security.gentoo.org/glsa/202007-52