rsync 3.1.1 allows remote attackers to write to arbitrary files via a symlink attack on a file in the synchronization path.
https://support.apple.com/kb/HT211289
https://support.apple.com/kb/HT211175
https://support.apple.com/kb/HT211171
https://support.apple.com/kb/HT211170
https://support.apple.com/kb/HT211168
https://security.gentoo.org/glsa/201605-04
http://www.ubuntu.com/usn/USN-2879-1
http://www.securitytracker.com/id/1034786
http://www.securityfocus.com/bid/76093
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00112.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00095.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00041.html