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ESB-2012.0003 - ALERT [Debian] krb5 and krb5-appl: Root compromise - Remote/unauthenticated

Date: 03 January 2012
References: ESB-2012.0001  ESB-2012.0002  ESB-2012.0005  ESB-2012.0006  ESB-2012.0009  ESB-2014.1883  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0003
                      krb5. krb5-appl security update
                              3 January 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           krb5
                   krb5-appl
Publisher:         Debian
Operating System:  Debian GNU/Linux 5
                   Debian GNU/Linux 6
Impact/Access:     Root Compromise -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-4862  

Reference:         ESB-2012.0002
                   ESB-2012.0001

Original Bulletin: 
   http://www.debian.org/security/2011/dsa-2375

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- - -------------------------------------------------------------------------
Debian Security Advisory DSA-2375-1                   security@debian.org
http://www.debian.org/security/                            Florian Weimer
December 26, 2011                      http://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : krb5, krb5-appl
Vulnerability  : buffer overflow
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-4862

It was discovered that the encryption support for BSD telnetd contains
a pre-authentication buffer overflow, which may enable remote
attackers who can connect to the Telnet port to execute arbitrary code
with root privileges.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.6.dfsg.4~beta1-5lenny7 of the krb5 package.

For the stable distribution (squeeze), this problem has been fixed in
version 1:1.0.1-1.2 of the krb5-appl package.

For the testing distribution (wheezy) and the unstable distribution
(sid), this problem will be fixed soon.

We recommend that you upgrade your krb5 and krb5-appl packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
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                On call after hours for member emergencies only.
===========================================================================
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