Aaron Siegel discovered that the web interface of cups, the Common UNIX Printing System, is prone to cross-site scripting attacks.
For the oldstable distribution (etch), this problem has been fixed in version 1.2.7-4+etch9.
For the stable distribution (lenny), this problem has been fixed in version 1.3.8-1+lenny7.
For the testing distribution (squeeze) and the unstable distribution (sid), this problem will be fixed soon.
We recommend that you upgrade your cups packages.
MD5 checksums of the listed files are available in the original advisory.