CVE-2017-17434

Critical

Published: 06/12/2017(UTC)Translated: 14/06/2026(UTC)NVD NIST

Summary

The daemon in rsync versions 3.1.2 and 3.1.3-development before 2017-12-03 does not check fnamecmp filenames in the daemon_filter_list data structure and does not apply the sanitize_paths protection mechanism to pathnames found in 'xname follows' strings. This allows remote attackers to bypass intended access restrictions.

Risk Assessment

Organizations may be exposed to unauthorized access to data, potentially leading to information leakage or file modification.

Recommendation

It is recommended to update rsync to the latest version to mitigate this vulnerability and implement additional security measures to protect against unauthorized access.

Original NVD description (English source)

The daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (in the recv_files function in receiver.c) and also does not apply the sanitize_paths protection mechanism to pathnames found in "xname follows" strings (in the read_ndx_and_attrs function in rsync.c), which allows remote attackers to bypass intended access restrictions.