Description (CNA)
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. From 2.25.0 until 2.25.2, Loofah::HTML5::Scrub.allowed_uri? does not reject javascript: or vbscript: URIs whose scheme is split by semicolon-less numeric character references such as :, 	, 
, or 
. CGI.unescapeHTML leaves these references encoded, so allowed_uri? reports the URL safe even though a browser decodes an encoded colon or strips encoded whitespace and executes the resulting URI scheme. This issue affects only callers that pass HTML-encoded strings directly to allowed_uri?; Loofah's default sanitize() path is not affected. This issue is fixed in version 2.25.2.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| flavorjones / loofah | affected >= 2.25.0, < 2.25.2 |
CWE
CWE-79, CWE-184
References
- https://github.com/flavorjones/loofah/security/advisories/GHSA-5qhf-9phg-95m2
- https://github.com/flavorjones/loofah/pull/308
- https://github.com/flavorjones/loofah/commit/f1be9d893b5a8dd79240441a912d8897e74c38c0
- https://github.com/flavorjones/loofah/releases/tag/v2.25.2
ADP enrichment
No English description supplied.
No references supplied.