ADVISORIES

• CVE-2022-23517 (NVD)
• GHSA-5x79-w82f-gw8w
• Vendor Advisory

GEM

rails-html-sanitizer

SEVERITY

CVSS v3.x: 7.5 (High)

PATCHED VERSIONS

• >= 1.4.4

DESCRIPTION

Summary

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.

Mitigation

Upgrade to rails-html-sanitizer >= 1.4.4.

RELATED

• https://cwe.mitre.org/data/definitions/1333.html
• https://hackerone.com/reports/1684163