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Test Kennung:1.3.6.1.4.1.25623.1.0.870391
Kategorie:Red Hat Local Security Checks
Titel:RedHat Update for krb5 RHSA-2011:0199-01
Zusammenfassung:The remote host is missing an update for the 'krb5'; package(s) announced via the referenced advisory.
Beschreibung:Summary:
The remote host is missing an update for the 'krb5'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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 principal names that were not null terminated, when the KDC was
configured to use an LDAP back end. A remote attacker could use this flaw
to crash the KDC via a specially-crafted request. (CVE-2011-0282)

A denial of service flaw was found in the way the MIT Kerberos KDC
processed certain principal names when the KDC was configured to use an
LDAP back end. A remote attacker could use this flaw to cause the KDC to
hang via a specially-crafted request. (CVE-2011-0281)

Red Hat would like to thank the MIT Kerberos Team for reporting these
issues. Upstream acknowledges Kevin Longfellow of Oracle Corporation as the
original reporter of the CVE-2011-0281 issue.

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.

Affected Software/OS:
krb5 on Red Hat Enterprise Linux (v. 5 server)

Solution:
Please Install the Updated Packages.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2011-0281
BugTraq ID: 46265
http://www.securityfocus.com/bid/46265
Bugtraq: 20110208 MITKRB5-SA-2011-002 KDC denial of service attacks [CVE-2011-0281 CVE-2011-0282 CVE-2011-0283] (Google Search)
http://www.securityfocus.com/archive/1/516299/100/0/threaded
Bugtraq: 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console (Google Search)
http://www.securityfocus.com/archive/1/520102/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDVSA-2011:024
http://www.mandriva.com/security/advisories?name=MDVSA-2011:025
http://mailman.mit.edu/pipermail/kerberos/2010-December/016800.html
http://www.redhat.com/support/errata/RHSA-2011-0199.html
http://www.redhat.com/support/errata/RHSA-2011-0200.html
http://www.securitytracker.com/id?1025037
http://secunia.com/advisories/43260
http://secunia.com/advisories/43273
http://secunia.com/advisories/43275
http://secunia.com/advisories/46397
http://securityreason.com/securityalert/8073
SuSE Security Announcement: SUSE-SR:2011:004 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00004.html
http://www.vupen.com/english/advisories/2011/0330
http://www.vupen.com/english/advisories/2011/0333
http://www.vupen.com/english/advisories/2011/0347
http://www.vupen.com/english/advisories/2011/0464
XForce ISS Database: kerberos-ldap-descriptor-dos(65324)
https://exchange.xforce.ibmcloud.com/vulnerabilities/65324
Common Vulnerability Exposure (CVE) ID: CVE-2011-0282
BugTraq ID: 46271
http://www.securityfocus.com/bid/46271
XForce ISS Database: kerberos-ldap-dos(65323)
https://exchange.xforce.ibmcloud.com/vulnerabilities/65323
CopyrightCopyright (c) 2011 Greenbone Networks GmbH

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