SB2023031054 - Path traversal in FHIR

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2023-28465)

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:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to write files outside the intended cache directory.

The vulnerability exists due to path traversal in TerminologyCacheManager when processing a crafted Zip archive. A remote attacker can supply archive entries with sibling-directory paths to write files outside the intended cache directory.

The issue is limited to escaping into sibling directories of the cache directory.

Remediation

Install update from vendor's website.

References

• https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-9654-pr4f-gh6m
• https://github.com/hapifhir/org.hl7.fhir.core/pull/1162