SB2023012388 - Path traversal in FHIR

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2023-24057)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to write arbitrary files outside the intended extraction directory.

The vulnerability exists due to improper limitation of a pathname to a restricted directory in Scanner.java when unpacking a zip archive downloaded over HTTP. A remote privileged user can tamper with the archive in transit to write arbitrary files outside the intended extraction directory.

Remediation

Install update from vendor's website.

References

• https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-jqh6-9574-5x22
• https://github.com/hapifhir/org.hl7.fhir.core/blob/8c43e21094af971303131efd081503e5a112db4b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/Scanner.java#L335-L357