Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01eDc5LXc4MmYtZ3c4d84AAwSf

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).

Permalink: https://github.com/advisories/GHSA-5x79-w82f-gw8w
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01eDc5LXc4MmYtZ3c4d84AAwSf
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: 7 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-5x79-w82f-gw8w, CVE-2022-23517
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://github.com/advisories/GHSA-5x79-w82f-gw8w

Repository: https://github.com/rails/rails-html-sanitizer
Blast Radius: 42.9

Affected Packages