CVE-2022-23517

Inefficient Regular Expression Complexity in rails-html-sanitizer

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use 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 has been patched in version 1.4.4.

rails-html-sanitizer es responsable de sanitizar fragmentos HTML en aplicaciones Rails. Ciertas configuraciones de rails-html-sanitizer < 1.4.4 utilizan 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 se ha corregido en la versión 1.4.4.

An inefficient Regular Expression vulnerability was found in rubygem rails-html-sanitizer. Certain configurations are susceptible to excessive backtracking, leading to a denial of service through CPU resource consumption.

Red Hat Satellite is a systems management tool for Linux-based infrastructure. It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single centralized tool. Issues addressed include code execution, cross site scripting, denial of service, deserialization, improper neutralization, information leakage, and remote shell upload vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2022-01-19 CVE Reserved
2022-12-14 CVE Published
2025-02-13 CVE Updated
2025-04-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-1333: Inefficient Regular Expression Complexity

CAPEC

References (5)

URL	Tag	Source
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979	2024-02-01

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-23517	2023-05-03
https://bugzilla.redhat.com/show_bug.cgi?id=2153720	2023-05-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Rubyonrails Search vendor "Rubyonrails"		Rails Html Sanitizers Search vendor "Rubyonrails" for product "Rails Html Sanitizers"				< 1.4.4 Search vendor "Rubyonrails" for product "Rails Html Sanitizers" and version " < 1.4.4"		rails		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected