概要

Important: krb5 security update

タイプ/重大度

Security Advisory: Important

トピック

Updated krb5 packages that fix one security issue are now available for Red
Hat Enterprise Linux 3, 4, and 5.

The Red Hat Security Response Team has rated this update as having
important 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.

説明

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).

A NULL pointer dereference flaw was discovered in the MIT Kerberos Generic
Security Service Application Program Interface (GSS-API) library. A remote,
authenticated attacker could use this flaw to crash any server application
using the GSS-API authentication mechanism, by sending a specially-crafted
GSS-API token with a missing checksum field. (CVE-2010-1321)

Red Hat would like to thank the MIT Kerberos Team for responsibly reporting
this issue. Upstream acknowledges Shawn Emery of Oracle as the original
reporter.

All krb5 users should upgrade to these updated packages, which contain a
backported patch to correct this issue. All running services using the MIT
Kerberos libraries must be restarted for the update to take effect.

解決法

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
http://kbase.redhat.com/faq/docs/DOC-11259

影響を受ける製品

• 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 3 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 4.8 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 4.8 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 4.8 i386
• 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 Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 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
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• 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 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 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 for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.8 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

修正

• BZ - 582466 - CVE-2010-1321 krb5: null pointer dereference in GSS-API library leads to DoS (MITKRB5-SA-2010-005)

CVE

• CVE-2010-1321

参考資料

• http://www.redhat.com/security/updates/classification/#important
• http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2010-005.txt

Red Hat Enterprise Linux Server 5

SRPM
x86_64
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-devel-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: ea453d71205d8fe49d073be46ecbd4ef42c04a0e698561b3fbb2059e2c25561c
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3
krb5-libs-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: 26c0deaa154e60c2de0ed3bd7c5a5549419f7bab45e20e4be0a42d5635c7dc5f
krb5-server-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: eca0a2bc110824b32efaf555df8f44d50b3cdc8a211b27cdf5d073057a4a51da
krb5-workstation-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: f40ae8e2a461b8206a304a1f6d4bd6d05a897b9d950a8ca439d4bc53a9114741
ia64
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3
i386
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3

Red Hat Enterprise Linux Workstation 5

SRPM
x86_64
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-devel-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: ea453d71205d8fe49d073be46ecbd4ef42c04a0e698561b3fbb2059e2c25561c
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3
krb5-libs-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: 26c0deaa154e60c2de0ed3bd7c5a5549419f7bab45e20e4be0a42d5635c7dc5f
krb5-server-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: eca0a2bc110824b32efaf555df8f44d50b3cdc8a211b27cdf5d073057a4a51da
krb5-workstation-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: f40ae8e2a461b8206a304a1f6d4bd6d05a897b9d950a8ca439d4bc53a9114741
i386
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3

Red Hat Enterprise Linux Desktop 5

SRPM
x86_64
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3
krb5-libs-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: 26c0deaa154e60c2de0ed3bd7c5a5549419f7bab45e20e4be0a42d5635c7dc5f
krb5-workstation-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: f40ae8e2a461b8206a304a1f6d4bd6d05a897b9d950a8ca439d4bc53a9114741
i386
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3

Red Hat Enterprise Linux Server from RHUI 5

SRPM
x86_64
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-devel-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: ea453d71205d8fe49d073be46ecbd4ef42c04a0e698561b3fbb2059e2c25561c
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3
krb5-libs-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: 26c0deaa154e60c2de0ed3bd7c5a5549419f7bab45e20e4be0a42d5635c7dc5f
krb5-server-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: eca0a2bc110824b32efaf555df8f44d50b3cdc8a211b27cdf5d073057a4a51da
krb5-workstation-1.6.1-36.el5_5.4.x86_64.rpm	SHA-256: f40ae8e2a461b8206a304a1f6d4bd6d05a897b9d950a8ca439d4bc53a9114741
i386
krb5-devel-1.6.1-36.el5_5.4.i386.rpm	SHA-256: a6d18f63f58097045c6f9deee31fcec11abb9750c7816c52c2ba7b33280ae416
krb5-libs-1.6.1-36.el5_5.4.i386.rpm	SHA-256: 60eaf96d42abd44b262fc26375b83343cb43d48edec5d672feffd9527d635ac3