drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in krb5
Name: |
Denial of Service in krb5 |
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ID: |
RHSA-2011:1790-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Mi, 7. Dezember 2011, 08:04 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1530
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-007.txt |
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Applikationen: |
MIT Kerberos |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: krb5 security update Advisory ID: RHSA-2011:1790-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1790.html Issue date: 2011-12-06 CVE Names: CVE-2011-1530 =====================================================================
1. Summary:
Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6.
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.
2. Relevant releases/architectures:
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
3. 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).
A NULL pointer dereference flaw was found in the way the MIT Kerberos KDC processed certain TGS (Ticket-granting Server) requests. A remote, authenticated attacker could use this flaw to crash the KDC via a specially-crafted TGS request. (CVE-2011-1530)
Red Hat would like to thank the MIT Kerberos project for reporting this issue.
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 daemon will be restarted automatically.
4. 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/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
753748 - CVE-2011-1530 krb5 (krb5kdc): NULL pointer dereference in the TGS handling (MITKRB5-SA-2011-007)
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
i386: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.i686.rpm krb5-workstation-1.9-22.el6_2.1.i686.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.x86_64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.x86_64.rpm krb5-workstation-1.9-22.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
i386: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-server-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.x86_64.rpm krb5-server-1.9-22.el6_2.1.x86_64.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.x86_64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.x86_64.rpm krb5-workstation-1.9-22.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.x86_64.rpm krb5-server-1.9-22.el6_2.1.x86_64.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
i386: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.i686.rpm krb5-server-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-workstation-1.9-22.el6_2.1.i686.rpm
ppc64: krb5-debuginfo-1.9-22.el6_2.1.ppc.rpm krb5-debuginfo-1.9-22.el6_2.1.ppc64.rpm krb5-devel-1.9-22.el6_2.1.ppc.rpm krb5-devel-1.9-22.el6_2.1.ppc64.rpm krb5-libs-1.9-22.el6_2.1.ppc.rpm krb5-libs-1.9-22.el6_2.1.ppc64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.ppc64.rpm krb5-server-1.9-22.el6_2.1.ppc64.rpm krb5-server-ldap-1.9-22.el6_2.1.ppc.rpm krb5-server-ldap-1.9-22.el6_2.1.ppc64.rpm krb5-workstation-1.9-22.el6_2.1.ppc64.rpm
s390x: krb5-debuginfo-1.9-22.el6_2.1.s390.rpm krb5-debuginfo-1.9-22.el6_2.1.s390x.rpm krb5-devel-1.9-22.el6_2.1.s390.rpm krb5-devel-1.9-22.el6_2.1.s390x.rpm krb5-libs-1.9-22.el6_2.1.s390.rpm krb5-libs-1.9-22.el6_2.1.s390x.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.s390x.rpm krb5-server-1.9-22.el6_2.1.s390x.rpm krb5-server-ldap-1.9-22.el6_2.1.s390.rpm krb5-server-ldap-1.9-22.el6_2.1.s390x.rpm krb5-workstation-1.9-22.el6_2.1.s390x.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.x86_64.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.x86_64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.x86_64.rpm krb5-server-1.9-22.el6_2.1.x86_64.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.x86_64.rpm krb5-workstation-1.9-22.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: krb5-1.9-22.el6_2.1.src.rpm
i386: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.i686.rpm krb5-server-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-workstation-1.9-22.el6_2.1.i686.rpm
x86_64: krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.x86_64.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.x86_64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.x86_64.rpm krb5-server-1.9-22.el6_2.1.x86_64.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.x86_64.rpm krb5-workstation-1.9-22.el6_2.1.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
7. References:
https://www.redhat.com/security/data/cve/CVE-2011-1530.html https://access.redhat.com/security/updates/classification/#moderate http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-007.txt
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux)
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