Vulnerability in Rails Rails-Html-Sanitizer
CVE-2022-23517
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 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. This issue has been patched in version 1.4.4.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: +0.001
Affected products
- Rails Rails-Html-Sanitizer — versions < 1.4.4
- Rubyonrails Rails HTML Sanitizers
- Debian Linux — versions 10.0
Weakness classification (CWE)
References
- github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w (Third Party Advisory)
- github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a… (Patch, Third Party Advisory)
- hackerone.com/reports/1684163 (Permissions Required, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/09/msg00012.html (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-23517?
- CVE-2022-23517 is a high-severity vulnerability in Rails Rails-Html-Sanitizer, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2022-12-14.
- How severe is CVE-2022-23517?
- High severity. CVSS v3 base score is 7.5 out of 10.