Headline
GHSA-5x79-w82f-gw8w: Inefficient Regular Expression Complexity in rails-html-sanitizer
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.
Severity
The maintainers have evaluated this as High Severity 7.5 (CVSS3.1).
References
- CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)
- https://hackerone.com/reports/1684163
Credit
This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
Inefficient Regular Expression Complexity in rails-html-sanitizer
High severity GitHub Reviewed Published Dec 13, 2022 in rails/rails-html-sanitizer • Updated Dec 13, 2022
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