We should update libtiff to 3.5.7 to avoid the annoying need to patch internal version contained in kfax and tetex. This forces us to create 3 advisories for each libtiff security issue discovered, which slows things down. For some reason the version included in RHEL2.1 does not allow us to use the system libtiff.
I have built libtiff-3.5.7-24.el2 in dist-2.1AS-errata-candidate now Waiting to hear from Than wether it can to replace the internal kfax version.
it seems kfax does not work well with libtiff-3.5.7, but with 3.6.1 in FC3. Please take a look at http://porkchop.devel.redhat.com/errata/showrequest.cgi?advisory=2005:021
Than, I looked a bit at the kde.{g3,g4,g32d} images. Here is what I found: On RHEL3-U4, kfax displays g3 properly, g32d not properly, and doesn't recognize g4 as a fax image. fax2tiff (2.5.7) handles g3 and g4 fine if you give it the -M option. it doesn't handle g32d regardless of -M The results with fax2tiff are the same on FC-3 with 3.6.1 and on rawhide with 3.7.1. So I believe there would not be any kfax regressions if you make it use /usr/bin/fax2tiff -M
I generated errata RHBA-2005:226-01 for this now.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2005-226.html