rails/rails-html-sanitizer · Security
Inefficient Regular Expression Complexity in rails-html-sanitizer
- GHSA ID
- GHSA-5x79-w82f-gw8w
- CVE ID
- CVE-2022-23517
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
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).
CWEs
- CWE-1333 · Inefficient Regular Expression Complexity
References
- https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w ↗
- https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979 ↗
- https://hackerone.com/reports/1684163 ↗
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23517.yml ↗
- https://nvd.nist.gov/vuln/detail/CVE-2022-23517 ↗
- https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html ↗
- https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html ↗
- https://github.com/advisories/GHSA-5x79-w82f-gw8w ↗