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Improper Restriction of XML External Entity Reference

CVE-2024-45294

High
8.6/10

Summary

The HL7 FHIR Core Artifacts repository provides the Java core object handling code, with utilities (including validator), for the Fast Healthcare Interoperability Resources (FHIR) specification. In versions prior to 6.3.21, XSLT transforms performed by various components are vulnerable to XML external entity injections. A processed XML file with a malicious DTD tag could produce XML containing data from the host system. This impacts use cases where org.hl7.fhir.core is used within a host where external clients can submit XML. No known workarounds are available.

  • LOW
  • NETWORK
  • NONE
  • CHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-611 - Improper Restriction of XML External Entity Reference

Listed 4th in the 'OWASP Top Ten', XML External Entities (XXE) vulnerability allows attackers to provide an XML input that contains an external entity. When the XML is parsed, it can cause data extraction and manipulation, execution of commands, denial-of-service attacks, and server-side request forgery.

References

Advisory Timeline

  • Published