Oracle Linux: CVE-2024-43398: ELSA-2024-6670: pcs security update (MODERATE) (Multiple Advisories)

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML gem 3.3.6 or later include the patch to fix the vulnerability.
A vulnerability was found in REXML RubyGems. This package is vulnerable to denial of service (DoS) when parsing a deep XML structure with the same local name attribute. This vulnerability only affects tree parser API like REXML::Document.new, other parser APIs such as stream parser API and SAX2 parser API are not affected.