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CVE-2022-29181

Description

Nokogiri is an open source XML and HTML library for Ruby. Nokogiri prior to version 1.13.6 does not type-check all inputs into the XML and HTML4 SAX parsers, allowing specially crafted untrusted inputs to cause illegal memory access errors (segfault) or reads from unrelated memory. Version 1.13.6 contains a patch for this issue. As a workaround, ensure the untrusted input is a `String` by calling `#to_s` or equivalent.

POC

Reference

- http://seclists.org/fulldisclosure/2022/Dec/23

- https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri

- https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri/

Github

No PoCs found on GitHub currently.