CVE-2022-23514

Inefficient Regular Expression Complexity in Loofah

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1.

Loofah es una librería general para manipular y transformar documentos y fragmentos HTML / XML, construida sobre Nokogiri. Loofah < 2.19.1 contiene una expresión regular ineficiente que es susceptible a un retroceso excesivo al intentar sanitizar ciertos atributos SVG. Esto puede provocar una denegación de servicio a través del consumo de recursos de CPU. Este problema está parcheado en la versión 2.19.1.

An inefficient regular expression vulnerability was found in rubygem loofah. While sanitizing certain SVG attributes, loofah is susceptible to excessive backtracking, which can result in a denial of service through CPU resource consumption.

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-01-19 CVE Reserved
2022-12-14 CVE Published
2024-08-03 CVE Updated
2024-08-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-1333: Inefficient Regular Expression Complexity

CAPEC

References (4)

URL	Tag	Source
https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-23514	2023-05-03
https://bugzilla.redhat.com/show_bug.cgi?id=2153234	2023-05-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Loofah Project Search vendor "Loofah Project"		Loofah Search vendor "Loofah Project" for product "Loofah"				< 2.19.1 Search vendor "Loofah Project" for product "Loofah" and version " < 2.19.1"		ruby		Affected