The CUPS print server in Debian is vulnerable to a denial of service when an HTTP request is received without being properly terminated.
For the stable distribution (woody) this problem has been fixed in version 1.1.14-5.
For the old stable distribution (potato) this problem has been fixed in version 1.0.4-12.2.
For the unstable distribution (sid) this problem is fixed in version 1.1.19final-1.
We recommend that you update your cupsys package.
MD5 checksums of the listed files are available in the original advisory.