Yellow Dog Linux Security Announcement
--------------------------------------

Package:	xpdf
Issue Date: 	September 26, 2000
Update Date: 	September 26, 2000
Priority:  	high
Advisory ID: 	YDU-20000926-2


1. Topic:

   Security problem in temporary file and malicious URL. 
 

2. Problem:

   "There is a security problem when using tmpnam() and fopen(). in 
   versions prior to 0.91. The problem is seen when a root user overwrites
   files where a symlink is created between the calls to tmpname() and
   fopen().

   There is also a problem with URL-type links in PDF documents that contain
   quote characters which could also be used to execute arbitrary commands."
   (from Red Hat advisory)



3. Solution:

   a) Updating via yup...
   We suggest that you use the Yellow Dog Update Program (yup)
   to keep your system up-to-date. The following command will
   automatically retrieve and install the fixed version of
   xpdf onto your system:

   	yup update xpdf

   b) Updating manually...
   The update can also be retrieved manually from our ftp site
   below along with the rpm command that should be used to install
   the update.

   ftp://ftp.yellowdoglinux.com/pub/yellowdog/updates/champion-1.2/ppc/RPMS/
   xpdf-0.91-1.ppc.rpm

        rpm -Fvh xpdf-0.91-1.ppc.rpm


4. Verification

MD5 checksum				Package
--------------------------------	----------------------------
c5bd8412700db94e98abdf07b0804ca8  	RPMS/xpdf-0.91-1.ppc.rpm
37a8894d1353da48cedd66391d5f0783  	SRPMS/xpdf-0.91-1.src.rpm

If you wish to verify that each package has not been corrupted or tampered with,
examine the md5sum with the following command: rpm --checksig --nogpg filename


5. Misc.

Terra Soft has setup a moderated mailing list where these security, bugfix, 
and package enhancement announcements will be posted. See
http://lists.yellowdoglinux.com/ for more information.

For information regarding the usage of yup, the Yellow Dog Update Program, see 
http://http://www.yellowdoglinux.com/support/solutions/ydl_general/yup.shtml