Incorrect Regular Expression in OWASP ModSecurity Core Rule Set (CRS) - CVE-2019-11387

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Main Vulnerability Database Vulnerabilities #VU72100

Incorrect Regular Expression in OWASP ModSecurity Core Rule Set (CRS) - CVE-2019-11387

Published: February 9, 2023


Vulnerability identifier: #VU72100
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-2019-11387
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
OWASP ModSecurity Core Rule Set (CRS)
Software vendor:
OWASP

Description

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

The vulnerability exists due to incorrect ruleset in /rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf. A remote attacker can pass a specially crafted string with nested repetition operators and perform regular expression denial of service (ReDos) attack.


Remediation

Install update from vendor's website.

External links