CVE-2024-43398: netapp bootstrap_os XML Entity Expansion

Vulnerability summary

CVE-2024-43398 is a medium (CVSS 5.9) XML Entity Expansion vulnerability in netapp bootstrap_os. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 67.8% of scored vulnerabilities.

Timeline

1. 22-08-2024
   PublishedVulnerability first disclosed.
2. 03-11-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.