The remote host is missing an update to fbi announced via advisory DSA 1068-1. Jan Braun discovered that the fbgs script of fbi, an image viewer for the framebuffer environment, creates an directory in a predictable manner, which allows denial of service through symlink attacks. For the old stable distribution (woody) this problem has been fixed in version 1.23woody1.
For the stable distribution (sarge) this problem has been fixed in version 2.01-1.2sarge1. For the unstable distribution (sid) this problem will be fixed soon. We recommend that you upgrade your fbi package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201068-1