Current stable version of rssh does support configure option --with-cvs to enable restriction of users to only use cvs via ssh. Please refer to http://bugs.gentoo.org/show_bug.cgi?id=33118 Since this is in the upstream source it should be able to enable this configure option e.g. via new cvs USE flag. Reproducible: Always Steps to Reproduce: 1. 2. 3.
the cvs support is autodetected, adding the configure option is pointless