util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to always succeed and allows rsync and rdist to bypass intended access restrictions in rssh.conf.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25424
http://www.securityfocus.com/bid/18999
http://www.debian.org/security/2006/dsa-1109