Resource exhaustion in Modsecurity Owasp Core Rule Set
CVE-2019-11389
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 next# 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
Vulnerability class: DoS (Denial of Service)
EPSS: 0.017 (74.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Modsecurity Owasp_modsecurity_core_rule_set
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2019-11389?
- CVE-2019-11389 is a medium-severity vulnerability in Modsecurity Owasp Core Rule Set, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2019-04-21.
- How severe is CVE-2019-11389?
- Medium severity. CVSS v3 base score is 5.3 out of 10.