Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
| Link | Tags |
|---|---|
| https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m | mitigation third party advisory |
| https://rubygems.org/gems/nokogiri | product third party advisory |
| https://hackerone.com/reports/747489 | permissions required |
| https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4 | third party advisory release notes |
| https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b | third party advisory patch |
| https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202208-29 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html | third party advisory mailing list |