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Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVE-2023-28465

Severity High
Score 7.5/10

Summary

The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries versions 5.6.92 through 5.6.105, 5.6.881, and 5.6.971 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directory name chosen by the attacker.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-22 - Path Traversal

Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.

Advisory Timeline

  • Published