It was found that kadmind's kpasswd service did not perform any validation on incoming network packets, causing it to reply to all requests. A remote attacker could use this flaw to send spoofed packets to a kpasswd service that appear to come from kadmind on a different server, causing the services to keep replying packets to each other, consuming network bandwidth and CPU. (CVE-2002-2443 __)
Run yum update krb5 to update your system.
i686: krb5-workstation-1.10.3-10.26.amzn1.i686 krb5-devel-1.10.3-10.26.amzn1.i686 krb5-server-1.10.3-10.26.amzn1.i686 krb5-pkinit-openssl-1.10.3-10.26.amzn1.i686 krb5-libs-1.10.3-10.26.amzn1.i686 krb5-debuginfo-1.10.3-10.26.amzn1.i686 krb5-server-ldap-1.10.3-10.26.amzn1.i686 src: krb5-1.10.3-10.26.amzn1.src x86_64: krb5-server-ldap-1.10.3-10.26.amzn1.x86_64 krb5-workstation-1.10.3-10.26.amzn1.x86_64 krb5-server-1.10.3-10.26.amzn1.x86_64 krb5-libs-1.10.3-10.26.amzn1.x86_64 krb5-pkinit-openssl-1.10.3-10.26.amzn1.x86_64 krb5-debuginfo-1.10.3-10.26.amzn1.x86_64 krb5-devel-1.10.3-10.26.amzn1.x86_64