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

CVE-2024-12087

High
7.5/10

Summary

A Path Traversal vulnerability exists in rsync. It stems from behavior enabled by the "--inc-recursive" option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the "--inc-recursive" option, a lack of proper symlink verification coupled with deduplication checks occurring on a per-file-list basis could allow a server to write files outside of the client's intended destination directory. A malicious server could write malicious files to arbitrary locations named after valid directories/paths on the client. Versions prior to 3.4.0 are affected by this issue.

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

References

Advisory Timeline

  • Published