tk8.4 - buffer overflow

It was discovered that Tk, a cross-platform graphical toolkit for Tcl,
performs insufficient input validation in the code used to load GIF
images, which may lead to the execution of arbitrary code.

For the old stable distribution (sarge), this problem has been fixed
in version 8.4.9-1sarge1.

For the stable distribution (etch), this problem has been fixed in
version 8.4.12-1etch1.

We recommend that you upgrade your tk8.4 packages. Updated packages for
sparc will be provided later.