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CVE-2019-11391

Published: 21 April 2019

** 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.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
modsecurity-crs
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
hirsute Ignored
(end of life)
xenial Needs triage

jammy Needs triage

bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

groovy Ignored
(end of life)
impish Ignored
(end of life)
trusty Does not exist
(trusty was needs-triage)
upstream Needs triage

mantic Needs triage

lunar Ignored
(end of life, was needs-triage)

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L