Red Hat: 2013:0942-01: krb5: Moderate Advisory
Summary
Kerberos is a network authentication system which allows clients and
servers to authenticate to each other using symmetric encryption and a
trusted third-party, the Key Distribution Center (KDC).
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)
All krb5 users should upgrade to these updated packages, which contain a
backported patch to correct this issue. After installing the updated
packages, the krb5kdc and kadmind daemons will be restarted automatically.
Summary
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
References
https://www.redhat.com/security/data/cve/CVE-2002-2443.html https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-libs-1.6.1-70.el5_9.2.i386.rpm
krb5-workstation-1.6.1-70.el5_9.2.i386.rpm
x86_64:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.x86_64.rpm
krb5-libs-1.6.1-70.el5_9.2.i386.rpm
krb5-libs-1.6.1-70.el5_9.2.x86_64.rpm
krb5-workstation-1.6.1-70.el5_9.2.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-devel-1.6.1-70.el5_9.2.i386.rpm
krb5-server-1.6.1-70.el5_9.2.i386.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.i386.rpm
x86_64:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.x86_64.rpm
krb5-devel-1.6.1-70.el5_9.2.i386.rpm
krb5-devel-1.6.1-70.el5_9.2.x86_64.rpm
krb5-server-1.6.1-70.el5_9.2.x86_64.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-devel-1.6.1-70.el5_9.2.i386.rpm
krb5-libs-1.6.1-70.el5_9.2.i386.rpm
krb5-server-1.6.1-70.el5_9.2.i386.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.i386.rpm
krb5-workstation-1.6.1-70.el5_9.2.i386.rpm
ia64:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.ia64.rpm
krb5-devel-1.6.1-70.el5_9.2.ia64.rpm
krb5-libs-1.6.1-70.el5_9.2.i386.rpm
krb5-libs-1.6.1-70.el5_9.2.ia64.rpm
krb5-server-1.6.1-70.el5_9.2.ia64.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.ia64.rpm
krb5-workstation-1.6.1-70.el5_9.2.ia64.rpm
ppc:
krb5-debuginfo-1.6.1-70.el5_9.2.ppc.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.ppc64.rpm
krb5-devel-1.6.1-70.el5_9.2.ppc.rpm
krb5-devel-1.6.1-70.el5_9.2.ppc64.rpm
krb5-libs-1.6.1-70.el5_9.2.ppc.rpm
krb5-libs-1.6.1-70.el5_9.2.ppc64.rpm
krb5-server-1.6.1-70.el5_9.2.ppc.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.ppc.rpm
krb5-workstation-1.6.1-70.el5_9.2.ppc.rpm
s390x:
krb5-debuginfo-1.6.1-70.el5_9.2.s390.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.s390x.rpm
krb5-devel-1.6.1-70.el5_9.2.s390.rpm
krb5-devel-1.6.1-70.el5_9.2.s390x.rpm
krb5-libs-1.6.1-70.el5_9.2.s390.rpm
krb5-libs-1.6.1-70.el5_9.2.s390x.rpm
krb5-server-1.6.1-70.el5_9.2.s390x.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.s390x.rpm
krb5-workstation-1.6.1-70.el5_9.2.s390x.rpm
x86_64:
krb5-debuginfo-1.6.1-70.el5_9.2.i386.rpm
krb5-debuginfo-1.6.1-70.el5_9.2.x86_64.rpm
krb5-devel-1.6.1-70.el5_9.2.i386.rpm
krb5-devel-1.6.1-70.el5_9.2.x86_64.rpm
krb5-libs-1.6.1-70.el5_9.2.i386.rpm
krb5-libs-1.6.1-70.el5_9.2.x86_64.rpm
krb5-server-1.6.1-70.el5_9.2.x86_64.rpm
krb5-server-ldap-1.6.1-70.el5_9.2.x86_64.rpm
krb5-workstation-1.6.1-70.el5_9.2.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.i686.rpm
krb5-workstation-1.10.3-10.el6_4.3.i686.rpm
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.x86_64.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.x86_64.rpm
krb5-workstation-1.10.3-10.el6_4.3.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-server-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.x86_64.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.x86_64.rpm
krb5-workstation-1.10.3-10.el6_4.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.i686.rpm
krb5-server-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-workstation-1.10.3-10.el6_4.3.i686.rpm
ppc64:
krb5-debuginfo-1.10.3-10.el6_4.3.ppc.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.ppc64.rpm
krb5-devel-1.10.3-10.el6_4.3.ppc.rpm
krb5-devel-1.10.3-10.el6_4.3.ppc64.rpm
krb5-libs-1.10.3-10.el6_4.3.ppc.rpm
krb5-libs-1.10.3-10.el6_4.3.ppc64.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.ppc64.rpm
krb5-server-1.10.3-10.el6_4.3.ppc64.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.ppc.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.ppc64.rpm
krb5-workstation-1.10.3-10.el6_4.3.ppc64.rpm
s390x:
krb5-debuginfo-1.10.3-10.el6_4.3.s390.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.s390x.rpm
krb5-devel-1.10.3-10.el6_4.3.s390.rpm
krb5-devel-1.10.3-10.el6_4.3.s390x.rpm
krb5-libs-1.10.3-10.el6_4.3.s390.rpm
krb5-libs-1.10.3-10.el6_4.3.s390x.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.s390x.rpm
krb5-server-1.10.3-10.el6_4.3.s390x.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.s390.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.s390x.rpm
krb5-workstation-1.10.3-10.el6_4.3.s390x.rpm
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.x86_64.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.x86_64.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.x86_64.rpm
krb5-workstation-1.10.3-10.el6_4.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.i686.rpm
krb5-server-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-workstation-1.10.3-10.el6_4.3.i686.rpm
x86_64:
krb5-debuginfo-1.10.3-10.el6_4.3.i686.rpm
krb5-debuginfo-1.10.3-10.el6_4.3.x86_64.rpm
krb5-devel-1.10.3-10.el6_4.3.i686.rpm
krb5-devel-1.10.3-10.el6_4.3.x86_64.rpm
krb5-libs-1.10.3-10.el6_4.3.i686.rpm
krb5-libs-1.10.3-10.el6_4.3.x86_64.rpm
krb5-pkinit-openssl-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-1.10.3-10.el6_4.3.x86_64.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.i686.rpm
krb5-server-ldap-1.10.3-10.el6_4.3.x86_64.rpm
krb5-workstation-1.10.3-10.el6_4.3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated krb5 packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Bugs Fixed
962531 - CVE-2002-2443 krb5: UDP ping-pong flaw in kpasswd