Ucum-java has an XXE vulnerability in XML parsing
Date: 2024-12
Affected: maven/org.fhir:ucum
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2024-55887
CWE: CWE-611
CVSS: 8.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N)

### Impact XML parsing performed by the UcumEssenceService is 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 ucum is being used to within a host where external clients can submit XML. ### Patches Release 1.0.9 of ucum fixes this vulnerability ### Workarounds Ensure that the source xml for instantiating UcumEssenceService is trusted. ### References * https://cwe.mitre.org/data/definitions/611.html * https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html#jaxp-documentbuilderfactory-saxparserfactory-and-dom4j


Mitigations:

Architectural layers (MAESTRO):