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

CVE-2020-21527

Severity High
Score 8.5/10

Summary

There is an Arbitrary file deletion vulnerability in halo v1.1.3. A backup function in the background allows a user, when deleting their backup files, to delete any files on the system through directory traversal.

  • LOW
  • NETWORK
  • SINGLE
  • COMPLETE
  • NONE
  • COMPLETE

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.

References

Advisory Timeline

  • Published