Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS00ODZmLWhqajktOXZoaM4AAwSc

Inefficient Regular Expression Complexity in Loofah

Summary

Loofah < 2.19.1 contains 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 Loofah >= 2.19.1.

Severity

The Loofah 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-486f-hjj9-9vhh
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS00ODZmLWhqajktOXZoaM4AAwSc
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-486f-hjj9-9vhh, CVE-2022-23514
References:

• https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh
• https://github.com/flavorjones/loofah/commit/a6e0a1ab90675a17b1b2be189129d94139e4b143
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23514.yml
• https://nvd.nist.gov/vuln/detail/CVE-2022-23514
• https://hackerone.com/reports/1684163
• https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html
• https://github.com/advisories/GHSA-486f-hjj9-9vhh

Repository: https://github.com/flavorjones/loofah
Blast Radius: 42.9

Affected Packages