1. Home
  2. CVE Database
  3. CVE-2019-11391
MEDIUM · 5.3

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 ...

Vulnerability Description

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

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW

Affected Products

VendorProductVersions
ModsecurityOwasp Modsecurity Core Rule Set<= 3.1.0

Related Weaknesses (CWE)

CWE-400

References

FAQ

What is CVE-2019-11391?

CVE-2019-11391 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...

How severe is CVE-2019-11391?

CVE-2019-11391 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-11391?

Check the references section above for vendor advisories and patch information. Affected products include: Modsecurity Owasp Modsecurity Core Rule Set.