From:	 dburcaw@newhope.terraplex.com
To:	 yellowdog-updates@lists.yellowdoglinux.com
Subject: [yellowdog-updates] Yellow Dog Linux Security Advisory: YDU-20010810-2
Date:	 10 Aug 2001 20:12:21 -0000

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

Package:	krb5	
Issue Date: 	August 10, 2001
Priority:	high		
Advisory ID: 	YDU-20010810-2


1. 	Topic:

	Updated krb5 packages are available
	that fix security vulnerabilities.


2. 	Problem:

	"By exploiting buffer overflows in the krb5 server included in the
	krb5-workstation package, a remote attacker can obtain superuser privileges
	on a vulnerable host."
	(from Red Hat's security 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(s) will
   	automatically retrieve and install the fixed version of
   	this update onto your system:

   		yup update krb5
		yup update krb5-devel
		yup update krb5-libs
		yup update krb5-server
		yup update krb5-workstation

   	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.  (Please use a mirror site)

   		ftp://ftp.yellowdoglinux.com/pub/yellowdog/updates/yellowdog-2.0/ppc/RPMS/
                rpm -Fvh krb5-1.2.2-12.ppc.rpm
		rpm -Fvh krb5-devel-1.2.2-12.ppc.rpm
		rpm -Fvh krb5-libs-1.2.2-12.ppc.rpm
		rpm -Fvh krb5-server-1.2.2-12.ppc.rpm
		rpm -Fvh krb5-workstation-1.2.2-12.ppc.rpm


4. Verification

MD5 checksum			  Package
--------------------------------  ----------------------------
202486ff707114b2b1e61e30cabe6ef0  SRPMS/krb5-1.2.2-12.src.rpm
33884fd0d60d160c484a4860c339e9fc  ppc/RPMS/krb5-devel-1.2.2-12.ppc.rpm
113844c322ff6ec554f122bf04d77bdd  ppc/RPMS/krb5-libs-1.2.2-12.ppc.rpm
5901fd32ba8cba72017249f3026f9a95  ppc/RPMS/krb5-server-1.2.2-12.ppc.rpm
e5bcff59fe8741f21bad4ad3faf4e187  ppc/RPMS/krb5-workstation-1.2.2-12.ppc.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://devel.yellowdoglinux.com/rp_yup.shtml