- Issued:
- 2010-11-30
- Updated:
- 2010-11-30
RHSA-2010:0926 - Moderate: krb5 security update
Synopsis
Moderate: krb5 security update
Type/Severity
Security Advisory Moderate
Topic
Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5.
The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
Description
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).
Multiple checksum validation flaws were discovered in the MIT Kerberos implementation. A remote attacker could use these flaws to tamper with certain Kerberos protocol packets and, possibly, bypass authentication mechanisms in certain configurations using Single-use Authentication Mechanisms. (CVE-2010-1323)
Red Hat would like to thank the MIT Kerberos Team for reporting these issues.
All krb5 users should upgrade to these updated packages, which contain a backported patch to correct these issues. After installing the updated packages, the krb5kdc daemon will be restarted automatically.
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 This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | ia64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | i386 |
| Red Hat Enterprise Linux for Power, big endian | 5 | ppc |
| Red Hat Enterprise Linux for Power, big endian | 4 | ppc |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 4.8 | ppc |
| Red Hat Enterprise Linux for IBM z Systems | 5 | s390x |
| Red Hat Enterprise Linux for IBM z Systems | 4 | s390x |
| Red Hat Enterprise Linux for IBM z Systems | 4 | s390 |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 4.8 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 4.8 | s390 |
| Red Hat Enterprise Linux Workstation | 5 | x86_64 |
| Red Hat Enterprise Linux Workstation | 5 | i386 |
| Red Hat Enterprise Linux Workstation | 4 | x86_64 |
| Red Hat Enterprise Linux Workstation | 4 | ia64 |
| Red Hat Enterprise Linux Workstation | 4 | i386 |
| Red Hat Enterprise Linux Server | 5 | x86_64 |
| Red Hat Enterprise Linux Server | 5 | ia64 |
| Red Hat Enterprise Linux Server | 5 | i386 |
| Red Hat Enterprise Linux Server | 4 | x86_64 |
| Red Hat Enterprise Linux Server | 4 | ia64 |
| Red Hat Enterprise Linux Server | 4 | i386 |
| Red Hat Enterprise Linux Server from RHUI | 5 | x86_64 |
| Red Hat Enterprise Linux Server from RHUI | 5 | i386 |
| Red Hat Enterprise Linux Desktop | 5 | x86_64 |
| Red Hat Enterprise Linux Desktop | 5 | i386 |
| Red Hat Enterprise Linux Desktop | 4 | x86_64 |
| Red Hat Enterprise Linux Desktop | 4 | i386 |
Updated Packages
- krb5-server-1.6.1-36.el5_5.6.ia64.rpm
- krb5-libs-1.6.1-36.el5_5.6.s390.rpm
- krb5-devel-1.3.4-62.el4_8.3.i386.rpm
- krb5-devel-1.3.4-62.el4_8.3.x86_64.rpm
- krb5-libs-1.6.1-36.el5_5.6.ppc64.rpm
- krb5-libs-1.3.4-62.el4_8.3.ppc.rpm
- krb5-libs-1.6.1-36.el5_5.6.s390x.rpm
- krb5-libs-1.6.1-36.el5_5.6.ppc.rpm
- krb5-server-1.3.4-62.el4_8.3.x86_64.rpm
- krb5-server-1.3.4-62.el4_8.3.i386.rpm
- krb5-workstation-1.3.4-62.el4_8.3.ppc.rpm
- krb5-devel-1.6.1-36.el5_5.6.ppc.rpm
- krb5-server-1.3.4-62.el4_8.3.ppc.rpm
- krb5-libs-1.3.4-62.el4_8.3.s390x.rpm
- krb5-devel-1.3.4-62.el4_8.3.s390x.rpm
- krb5-workstation-1.3.4-62.el4_8.3.i386.rpm
- krb5-workstation-1.3.4-62.el4_8.3.s390.rpm
- krb5-workstation-1.3.4-62.el4_8.3.s390x.rpm
- krb5-libs-1.3.4-62.el4_8.3.i386.rpm
- krb5-devel-1.3.4-62.el4_8.3.s390.rpm
- krb5-libs-1.3.4-62.el4_8.3.x86_64.rpm
- krb5-libs-1.3.4-62.el4_8.3.s390.rpm
- krb5-server-1.3.4-62.el4_8.3.s390.rpm
- krb5-1.6.1-36.el5_5.6.src.rpm
- krb5-libs-1.6.1-36.el5_5.6.x86_64.rpm
- krb5-devel-1.6.1-36.el5_5.6.s390x.rpm
- krb5-server-1.6.1-36.el5_5.6.s390x.rpm
- krb5-libs-1.3.4-62.el4_8.3.ia64.rpm
- krb5-workstation-1.3.4-62.el4_8.3.ia64.rpm
- krb5-workstation-1.6.1-36.el5_5.6.s390x.rpm
- krb5-1.3.4-62.el4_8.3.src.rpm
- krb5-server-1.6.1-36.el5_5.6.ppc.rpm
- krb5-devel-1.6.1-36.el5_5.6.i386.rpm
- krb5-devel-1.6.1-36.el5_5.6.ia64.rpm
- krb5-workstation-1.6.1-36.el5_5.6.x86_64.rpm
- krb5-libs-1.6.1-36.el5_5.6.i386.rpm
- krb5-server-1.3.4-62.el4_8.3.ia64.rpm
- krb5-workstation-1.3.4-62.el4_8.3.x86_64.rpm
- krb5-workstation-1.6.1-36.el5_5.6.i386.rpm
- krb5-devel-1.3.4-62.el4_8.3.ia64.rpm
- krb5-devel-1.3.4-62.el4_8.3.ppc.rpm
- krb5-workstation-1.6.1-36.el5_5.6.ia64.rpm
- krb5-libs-1.6.1-36.el5_5.6.ia64.rpm
- krb5-workstation-1.6.1-36.el5_5.6.ppc.rpm
- krb5-devel-1.6.1-36.el5_5.6.x86_64.rpm
- krb5-devel-1.6.1-36.el5_5.6.s390.rpm
- krb5-devel-1.6.1-36.el5_5.6.ppc64.rpm
- krb5-libs-1.3.4-62.el4_8.3.ppc64.rpm
- krb5-server-1.6.1-36.el5_5.6.i386.rpm
- krb5-server-1.6.1-36.el5_5.6.x86_64.rpm
- krb5-server-1.3.4-62.el4_8.3.s390x.rpm
Fixes
CVEs
References
- http://www.redhat.com/security/updates/classification/#moderate
- Content from web.mit.edu is not included.Content from web.mit.edu is not included.http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2010-007.txt
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.