Vulnerability CVE-2019-11389

Vulnerability Name:

CVE-2019-11389 (CCN-160030)

Assigned:

2019-04-15

Published:

2019-04-15

Updated:

2022-03-30

Summary:

** 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 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.

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-400

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2019-11389

Source: XF
Type: UNKNOWN
owasp-cve201911389-dos(160030)

Source: CCN
Type: OWASP GIT Repository
ReDOS Vulnerbility [High] (#2) #1356

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1356

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1372

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-11389

Vulnerable Configuration:

Configuration 1:

cpe:/a:modsecurity:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:* (Version <= 3.1.0)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:2019113890000000	V	CVE-2019-11389 on Ubuntu 19.04 (disco) - medium.	2019-04-21
oval:com.ubuntu.bionic:def:2019113890000000	V	CVE-2019-11389 on Ubuntu 18.04 LTS (bionic) - medium.	2019-04-21
oval:com.ubuntu.xenial:def:2019113890000000	V	CVE-2019-11389 on Ubuntu 16.04 LTS (xenial) - medium.	2019-04-21
oval:com.ubuntu.cosmic:def:201911389000	V	CVE-2019-11389 on Ubuntu 18.10 (cosmic) - medium.	2019-04-20
oval:com.ubuntu.cosmic:def:2019113890000000	V	CVE-2019-11389 on Ubuntu 18.10 (cosmic) - medium.	2019-04-20
oval:com.ubuntu.bionic:def:201911389000	V	CVE-2019-11389 on Ubuntu 18.04 LTS (bionic) - medium.	2019-04-20
oval:com.ubuntu.xenial:def:201911389000	V	CVE-2019-11389 on Ubuntu 16.04 LTS (xenial) - medium.	2019-04-20
oval:com.ubuntu.trusty:def:201911389000	V	CVE-2019-11389 on Ubuntu 14.04 LTS (trusty) - medium.	2019-04-20

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