What is the severity of CVE-2019-11391?

CVE-2019-11391 is considered a medium severity vulnerability due to its potential to cause denial of service.

How do I fix CVE-2019-11391?

To mitigate CVE-2019-11391, upgrade OWASP ModSecurity Core Rule Set to a version higher than 3.1.0.

What is the impact of CVE-2019-11391?

CVE-2019-11391 allows remote attackers to exploit the vulnerability leading to denial of service.

Is CVE-2019-11391 still an issue in the latest versions of OWASP ModSecurity Core Rule Set?

No, CVE-2019-11391 is resolved in versions of OWASP ModSecurity Core Rule Set released after 3.1.0.

What specific configurations are affected by CVE-2019-11391?

CVE-2019-11391 affects the REQUEST-933-APPLICATION-ATTACK-PHP.conf configuration file in the OWASP ModSecurity Core Rule Set.

Vulnerability/
CVE-2019-11391

medium

5.3

CWE

400

21/4/2019

4/8/2024

CVE-2019-11391

First published: Sun Apr 21 2019(Updated: )

** DISPUTED ** 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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
OWASP ModSecurity Core Rule Set	<=3.1.0

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Frequently Asked Questions

What is the severity of CVE-2019-11391?
CVE-2019-11391 is considered a medium severity vulnerability due to its potential to cause denial of service.
How do I fix CVE-2019-11391?
To mitigate CVE-2019-11391, upgrade OWASP ModSecurity Core Rule Set to a version higher than 3.1.0.
What is the impact of CVE-2019-11391?
CVE-2019-11391 allows remote attackers to exploit the vulnerability leading to denial of service.
Is CVE-2019-11391 still an issue in the latest versions of OWASP ModSecurity Core Rule Set?
No, CVE-2019-11391 is resolved in versions of OWASP ModSecurity Core Rule Set released after 3.1.0.
What specific configurations are affected by CVE-2019-11391?
CVE-2019-11391 affects the REQUEST-933-APPLICATION-ATTACK-PHP.conf configuration file in the OWASP ModSecurity Core Rule Set.

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