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Red Hat Enterprise Linux 6 RHSA-2011:0447-01 Moderate: KRB5 Invalid Free

red hat
Calendar Grey April 14, 2011
Dist Redhat Esm H88
A new krb5 security patch for Red Hat Enterprise Linux 6 enhances security measures by correcting a flaw linked to improper memory deallocation, ensuring robust protection.
Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6

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

Summary

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 invalid free flaw was found in the password-changing capability of the MIT Kerberos administration daemon, kadmind. A remote, unauthenticated attacker could use this flaw to cause kadmind to abort via a specially-crafted request. (CVE-2011-0285)
All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the kadmind daemon will be restarted automatically.

Topics%20covered

Topics Covered

security advisory Red Hat moderate threat security patch krb5 Linux update authentication flaw

References

https://access.redhat.com/security/cve/CVE-2011-0285 https://access.redhat.com/security/updates/classification/#moderate http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-004.txt

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm krb5-libs-1.8.2-3.el6_0.7.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.7.i686.rpm krb5-workstation-1.8.2-3.el6_0.7.i686.rpm
x86_64: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.7.x86_64.rpm krb5-libs-1.8.2-3.el6_0.7.i686.rpm krb5-libs-1.8.2-3.el6_0.7.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.7.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.7.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm krb5-devel-1.8.2-3.el6_0.7.i686.rpm krb5-server-1.8.2-3.el6_0.7.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.7.i686.rpm
x86_64: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.7.x86_64.rpm krb5-devel-1.8.2-3.el6_0.7.i686.rpm krb5-devel-1.8.2-3.el6_0.7.x86_64.rpm krb5-server-1.8.2-3.el6_0.7.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.7.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.7.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.7.x86_64.rpm krb5-libs-1.8.2-3.el6_0.7.i686.rpm krb5-libs-1.8.2-3.el6_0.7.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: krb5-debuginfo-1.8.2-3.el6_0.7.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:0447-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:0447.html
Issue date: 2011-04-14

Topic

Updated krb5 packages that fix one security issue are now available for RedHat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory Red Hat moderate threat security patch krb5 Linux update authentication flaw

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

Bugs Fixed

696334 - CVE-2011-0285 krb5: kadmind invalid pointer free() (MITKRB5-SA-004)

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