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)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References - [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html) - https://hackerone.com/reports/1684163 ## Credit This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2022-23517US | high7.5 | — | ||
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 expressio… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/rails/rails-html-sanitizerPACKAGE
- https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979WEB
- https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8wWEB
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23517.ymlWEB
- https://hackerone.com/reports/1684163WEB
- https://lists.debian.org/debian-lts-announce/2023/09/msg00012.htmlWEB
- https://lists.debian.org/debian-lts-announce/2024/09/msg00045.htmlWEB
- https://nvd.nist.gov/vuln/detail/CVE-2022-23517ADVISORY
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