CVS 1.12.x, when configured to use SSH for remote repositories, might allow remote attackers to execute arbitrary code via a repository URL with a crafted hostname, as demonstrated by “-oProxyCommand=id;localhost:/bar.”
lists.nongnu.org/archive/html/bug-cvs/2017-08/msg00000.html
www.debian.org/security/2017/dsa-3940
www.openwall.com/lists/oss-security/2017/08/11/1
www.openwall.com/lists/oss-security/2017/08/11/4
www.securityfocus.com/bid/100279
www.ubuntu.com/usn/USN-3399-1
bugzilla.redhat.com/show_bug.cgi?id=1480800
security.gentoo.org/glsa/201709-17