Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS0yMjhnLTk0OHItODNneM4AAwSd

Improper neutralization of data URIs may allow XSS in Loofah

Summary

Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml media type in data URIs.

Mitigation

Upgrade to Loofah >= 2.19.1.

Severity

The Loofah maintainers have evaluated this as Medium Severity 6.1.

References

• CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)
• SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg
• https://hackerone.com/reports/1694173
• https://github.com/flavorjones/loofah/issues/101

Credit

This vulnerability was responsibly reported by Maciej Piechota (@haqpl).

Permalink: https://github.com/advisories/GHSA-228g-948r-83gx
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0yMjhnLTk0OHItODNneM4AAwSd
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 6 months ago
Updated: 4 months ago

CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-228g-948r-83gx, CVE-2022-23515
References:

• https://github.com/flavorjones/loofah/security/advisories/GHSA-228g-948r-83gx
• https://github.com/flavorjones/loofah/issues/101
• https://github.com/w3c/svgwg/issues/266
• https://github.com/flavorjones/loofah/commit/415677f3cf7f9254f42f811e784985cd63c7407f
• https://hackerone.com/reports/1694173
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23515.yml
• https://nvd.nist.gov/vuln/detail/CVE-2022-23515
• https://github.com/advisories/GHSA-228g-948r-83gx

Affected Packages