The remote host is missing an update to gatos announced via advisory DSA 640-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20640-1

Erik Sjölund discovered a buffer overflow in xatitv, one of the programs in the gatos package, that is used to display video with certain ATI video cards. xatitv is installed setuid root in order to gain direct access to the video hardware. For the stable distribution (woody) this problem has been fixed in version 0.0.5-6woody3. For the unstable distribution (sid) this problem has been fixed in version 0.0.5-15. We recommend that you upgrade your gatos package.