Bypassing Access Restrictions in rsync Daemon

CVE-2017-17434 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

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.

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