The remote Debian host is missing a security-related update.
Michal Kowalczyk and Adam Chester discovered that missing input sanitising in the foomatic-rip print filter might result in the execution of arbitrary commands.
Upgrade the foomatic-filters packages. For the oldstable distribution (wheezy), these problems have been fixed in version 4.0.17-1+deb7u1. For the stable distribution (jessie), these problems have been fixed in version 4.0.17-5+deb8u1.