CyberRota Analysis
AI-GeneratedThe vulnerability affects the HAPI FHIR library in Java, specifically the SHCParser component, which improperly handles attacker-controlled Smart Health Card JWT content, allowing for excessive heap allocation and potential process instability. Applications or validator services that process untrusted SHC content are at risk of severe performance degradation or crashes due to unbounded memory consumption. Organizations utilizing HAPI FHIR versions prior to 6.9.12 should prioritize upgrading to mitigate these risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.12, SHCParser in org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/SHCParser.java can consume attacker-controlled Smart Health Card JWT content whose header contains zip: "DEF" and whose small raw-DEFLATE payload expands to a very large value. SHCParser.decodeJWT() passes the decoded payload to SHCParser.inflate(), which accumulates all decompressed bytes in a ByteArrayOutputStream without an output-size limit before JSON parsing, and SHCParser.decompress() contains the same unbounded pattern. An application or validator service that accepts attacker-supplied SHC content can therefore suffer excessive heap allocation, severe garbage-collection pressure, request failure, process instability, or process termination. This issue is fixed in version 6.9.12.