Incorrect regular expression in rails-html-sanitizer - CVE-2022-23517
Published: May 8, 2023
Vulnerability identifier: #VU75786
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-23517
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
rails-html-sanitizer
rails-html-sanitizer
Software vendor:
Rails
Rails
Description
The vulnerability allows a remote attacker to perform DoS attack.
The vulnerability exists due to usage of an incorrect regular expression to parse SVG attributes. A remote attacker can pass a specially crafted SVG image to the application and consume excessive CPU resources.
Remediation
Install updates from vendor's website.