- Issued:
- 2012-07-31
- Updated:
- 2012-07-31
RHSA-2012:1131 - Important: krb5 security update
Synopsis
Important: krb5 security update
Type/Severity
Security Advisory Important
Topic
Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links 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).
An uninitialized pointer use flaw was found in the way the MIT Kerberos KDC handled initial authentication requests (AS-REQ). A remote, unauthenticated attacker could use this flaw to crash the KDC via a specially-crafted AS-REQ request. (CVE-2012-1015)
A NULL pointer dereference flaw was found in the MIT Kerberos administration daemon, kadmind. A Kerberos administrator who has the "create" privilege could use this flaw to crash kadmind. (CVE-2012-1013)
Red Hat would like to thank the MIT Kerberos project for reporting CVE-2012-1015. Upstream acknowledges Emmanuel Bouillon (NCI Agency) as the original reporter of CVE-2012-1015.
All krb5 users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the krb5kdc and kadmind daemons 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 https://access.redhat.com/knowledge/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.3 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.3 | i386 |
| Red Hat Enterprise Linux for Scientific Computing | 6 | x86_64 |
| Red Hat Enterprise Linux for Power, big endian | 6 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 6.3 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems | 6 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 6.3 | s390x |
| Red Hat Enterprise Linux Workstation | 6 | x86_64 |
| Red Hat Enterprise Linux Workstation | 6 | i386 |
| Red Hat Enterprise Linux Server | 6 | x86_64 |
| Red Hat Enterprise Linux Server | 6 | i386 |
| Red Hat Enterprise Linux Server from RHUI | 6 | x86_64 |
| Red Hat Enterprise Linux Server from RHUI | 6 | i386 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.3 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.3 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 6 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension | 6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension | 6 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) | 6 | s390x |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 6 | s390x |
| Red Hat Enterprise Linux Desktop | 6 | x86_64 |
| Red Hat Enterprise Linux Desktop | 6 | i386 |
Updated Packages
- krb5-debuginfo-1.9-33.el6_3.2.x86_64.rpm
- krb5-server-ldap-1.9-33.el6_3.2.ppc.rpm
- krb5-pkinit-openssl-1.9-33.el6_3.2.s390x.rpm
- krb5-libs-1.9-33.el6_3.2.s390x.rpm
- krb5-libs-1.9-33.el6_3.2.i686.rpm
- krb5-devel-1.9-33.el6_3.2.ppc.rpm
- krb5-pkinit-openssl-1.9-33.el6_3.2.i686.rpm
- krb5-server-1.9-33.el6_3.2.ppc64.rpm
- krb5-pkinit-openssl-1.9-33.el6_3.2.ppc64.rpm
- krb5-server-ldap-1.9-33.el6_3.2.i686.rpm
- krb5-server-ldap-1.9-33.el6_3.2.x86_64.rpm
- krb5-devel-1.9-33.el6_3.2.i686.rpm
- krb5-debuginfo-1.9-33.el6_3.2.s390.rpm
- krb5-libs-1.9-33.el6_3.2.ppc64.rpm
- krb5-debuginfo-1.9-33.el6_3.2.ppc64.rpm
- krb5-debuginfo-1.9-33.el6_3.2.ppc.rpm
- krb5-libs-1.9-33.el6_3.2.x86_64.rpm
- krb5-server-ldap-1.9-33.el6_3.2.s390.rpm
- krb5-workstation-1.9-33.el6_3.2.s390x.rpm
- krb5-server-1.9-33.el6_3.2.x86_64.rpm
- krb5-server-1.9-33.el6_3.2.s390x.rpm
- krb5-devel-1.9-33.el6_3.2.s390x.rpm
- krb5-debuginfo-1.9-33.el6_3.2.s390x.rpm
- krb5-libs-1.9-33.el6_3.2.ppc.rpm
- krb5-debuginfo-1.9-33.el6_3.2.i686.rpm
- krb5-workstation-1.9-33.el6_3.2.i686.rpm
- krb5-workstation-1.9-33.el6_3.2.ppc64.rpm
- krb5-server-1.9-33.el6_3.2.i686.rpm
- krb5-server-ldap-1.9-33.el6_3.2.s390x.rpm
- krb5-devel-1.9-33.el6_3.2.x86_64.rpm
- krb5-pkinit-openssl-1.9-33.el6_3.2.x86_64.rpm
- krb5-1.9-33.el6_3.2.src.rpm
- krb5-server-ldap-1.9-33.el6_3.2.ppc64.rpm
- krb5-devel-1.9-33.el6_3.2.s390.rpm
- krb5-libs-1.9-33.el6_3.2.s390.rpm
- krb5-workstation-1.9-33.el6_3.2.x86_64.rpm
- krb5-devel-1.9-33.el6_3.2.ppc64.rpm
Fixes
CVEs
References
- https://access.redhat.com/security/updates/classification/#important
- Content from web.mit.edu is not included.Content from web.mit.edu is not included.http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2012-001.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.