A new update is available for Fedora Core - [SECURITY] Fedora Core 4 Update: cups-1.1.23-15.3. Here the announcement:

Fedora Update Notification
FEDORA-2005-000
2006-01-05
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Product : Fedora Core 4
Name : cups
Version : 1.1.23
Release : 15.3
Summary : Common Unix Printing System
Description :
The Common UNIX Printing System provides a portable printing layer for
UNIXÂ operating systems. It has been developed by Easy Software Products
to promote a standard printing solution for all UNIX vendors and users.
CUPS provides the System V and Berkeley command-line interfaces.

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Update Information:

This update fixes the pdftops filter's handling of some
incorrectly-formed PDF files. Issues fixed are
CVE-2005-3625, CVE-2005-3626, and CVE-2005-3627.
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* Wed Jan 4 2006 Tim Waugh <twaugh@redhat.com> 1:1.1.23-15.3
- Apply patch to fix CVE-2005-3625, CVE-2005-3626, CVE-2005-3627
(bug #176868).


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This update can be downloaded from:
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/4/

b65393b6e832e37cd45944fa1fcb2f9f SRPMS/cups-1.1.23-15.3.src.rpm
02eadf80e0cfb528185e0b9274077006 ppc/cups-1.1.23-15.3.ppc.rpm
e2cb40aef49d878dd26d5f03cb1fd01e ppc/cups-devel-1.1.23-15.3.ppc.rpm
a5435a5bcfffa902385e459d87a497c6 ppc/cups-libs-1.1.23-15.3.ppc.rpm
2de63386f71fc3c04f698b7c72c1dba8 ppc/cups-lpd-1.1.23-15.3.ppc.rpm
43eb8850d0fafe3de68878b6f8daf77a ppc/debug/cups-debuginfo-1.1.23-15.3.ppc.rpm
a6ad7b471609dc51991518fff8d3cf60 ppc/cups-libs-1.1.23-15.3.ppc64.rpm
8742299c1f7299076bb2b3981fff4c98 x86_64/cups-1.1.23-15.3.x86_64.rpm
bd297bc78d37c1b460d1c9e43230ca69 x86_64/cups-devel-1.1.23-15.3.x86_64.rpm
6ac6c13e86d1305d9bcf9a319e78e4c2 x86_64/cups-libs-1.1.23-15.3.x86_64.rpm
40c906f6e51a7e80053d20ed3cd46db0 x86_64/cups-lpd-1.1.23-15.3.x86_64.rpm
ba48481077a96a3e2ba2aa8a45b3af62 x86_64/debug/cups-debuginfo-1.1.23-15.3.x86_64.rpm
dd421fc881b169edd6eeb4dd066c86b2 x86_64/cups-libs-1.1.23-15.3.i386.rpm
e4de7feac1df02a425ab3efa6144f4ff i386/cups-1.1.23-15.3.i386.rpm
3e11e02156acc1ab98c39e81eaa94845 i386/cups-devel-1.1.23-15.3.i386.rpm
dd421fc881b169edd6eeb4dd066c86b2 i386/cups-libs-1.1.23-15.3.i386.rpm
2b0df8e6199debab3a3715b643b4b504 i386/cups-lpd-1.1.23-15.3.i386.rpm
4f1b9c6b9a2455ed4e4f0a6531a5a006 i386/debug/cups-debuginfo-1.1.23-15.3.i386.rpm

This update can also be installed with the Update Agent; you can
launch the Update Agent with the 'up2date' command.