Description
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.11, XhtmlParser.java imposes no maximum element nesting depth, so a deeply nested text.div narrative triggers unbounded recursion between parseElementInner() and parseElement(), raising a StackOverflowError. An attacker who can submit FHIR resources containing such narratives can thus crash a parsing or validation worker thread, affecting validator services and any application that parses attacker-supplied FHIR JSON or XML. This issue is fixed in version 6.9.11.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
hapifhir org.hl7.fhir.core
< 6.9.11affected
hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.r5
< 6.9.11affected
hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.utilities
< 6.9.11affected
hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation
< 6.9.11affected
hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli
< 6.9.11affected