Vulnerability Details CVE-2019-11391
An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with $a# at the beginning and nested repetition operators. NOTE: the software maintainer disputes that this is a vulnerability because the issue cannot be exploited via ModSecurity
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.8%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
Products affected by CVE-2019-11391
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cpe:2.3:a:modsecurity:owasp_modsecurity_core_rule_set:3.0.0
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cpe:2.3:a:modsecurity:owasp_modsecurity_core_rule_set:3.0.2
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cpe:2.3:a:modsecurity:owasp_modsecurity_core_rule_set:3.1.0