GitHub Advisory DatabaseGHSA-5X79-W82F-GW8WInefficient Regular Expression Complexity in rails-html-sanitizer
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
50.5%
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).
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| typo3 | html_sanitizer | * | cpe:2.3:a:typo3:html_sanitizer:*:*:*:*:*:*:*:* |
References
github.com/advisories/GHSA-5x79-w82f-gw8w
github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979
github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w
github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23517.yml
hackerone.com/reports/1684163
lists.debian.org/debian-lts-announce/2023/09/msg00012.html
nvd.nist.gov/vuln/detail/CVE-2022-23517
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
50.5%