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://http://www.yellowdoglinux.com/support/solutions/ydl_general/yup.shtml