CVE-2019-12741: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

June 7, 2019 (updated August 4, 2021)

XSS exists in the HAPI FHIR testpage overlay module of the HAPI FHIR library before 3.8.0. The attack involves unsanitized HTTP parameters being output in a form page, allowing attackers to leak cookies and other sensitive information from ca/uhn/fhir/to/BaseController.java via a specially crafted URL. (This module is not generally used in production systems so the attack surface is expected to be low, but affected systems are recommended to upgrade immediately.)

References

github.com/advisories/GHSA-52mh-p2m2-w625
github.com/jamesagnew/hapi-fhir/commit/8f41159eb147eeb964cad68b28eff97acac6ea9a
github.com/jamesagnew/hapi-fhir/issues/1335
github.com/jamesagnew/hapi-fhir/releases/tag/v3.8.0
nvd.nist.gov/vuln/detail/CVE-2019-12741

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