LinuxSecurity.com
Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Welcome!
Sign up!
EnGarde Community
Login
Polls
What is the most important Linux security technology?
 
Advisories
Community
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
SELinux
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Securitydistro
Latest Newsletters
Linux Security Week: September 15th, 2014
Linux Security Week: September 8th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
Red Hat: krb5 security vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
RedHat Linux Updated Kerberos (krb5) packages that correct double-free and ASN.1parsing bugs are now available for Red Hat Enterprise Linux.

---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated krb5 packages fix security vulnerabilities
Advisory ID:       RHSA-2004:448-01
Issue date:        2004-08-31
Updated on:        2004-08-31
Product:           Red Hat Enterprise Linux
Keywords:          krb5 double-free asn.1
Obsoletes:         RHSA-2004:236
CVE Names:         CAN-2004-0642 CAN-2004-0643 CAN-2004-0644
---------------------------------------------------------------------

1. Summary:

Updated Kerberos (krb5) packages that correct double-free and ASN.1
parsing bugs are now available for Red Hat Enterprise Linux.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Problem description:

Kerberos is a networked authentication system that uses a trusted third
party (a KDC) to authenticate clients and servers to each other.

Several double-free bugs were found in the Kerberos 5 KDC and libraries.  A
remote attacker could potentially exploit these flaws to execute arbitrary
code.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CAN-2004-0642 and CAN-2004-0643 to these issues.

A double-free bug was also found in the krb524 server (CAN-2004-0772),
however this issue was fixed for Red Hat Enterprise Linux 2.1 users by a
previous erratum, RHSA-2003:052.

An infinite loop bug was found in the Kerberos 5 ASN.1 decoder library.  A
remote attacker may be able to trigger this flaw and cause a denial of
service. The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2004-0644 to this issue.

All users of krb5 should upgrade to these updated packages, which contain
backported security patches to resolve these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

     http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed  (http://bugzilla.redhat.com/ for more info):

129680 - Upgrading to krb5-libs 1.2.2-27 can cause undefined symbol __dn_expand

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS: 
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/krb5-1.2.2-31.src.rpm
908bd9ee7963203d5c086e25b0849568  krb5-1.2.2-31.src.rpm

i386:
f5fc294848750e1186efd792aaca3fa1  krb5-devel-1.2.2-31.i386.rpm
1da2499c2aa50026be1eda1774cb8fc0  krb5-libs-1.2.2-31.i386.rpm
72749007a7033ff2a31dc4ee20a439c7  krb5-server-1.2.2-31.i386.rpm
be44496d6d25c3e5c1754ce871b3de49  krb5-workstation-1.2.2-31.i386.rpm

ia64:
d81f70e064675a486c9a796fd1ea6297  krb5-devel-1.2.2-31.ia64.rpm
bd5eeae1a8d4b97585bbe67b746edb1d  krb5-libs-1.2.2-31.ia64.rpm
bb30a6820d6c475452458a3cebca55b8  krb5-server-1.2.2-31.ia64.rpm
c7b3177d7e82f890ef669196c2ff0f8f  krb5-workstation-1.2.2-31.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS: 
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/krb5-1.2.2-31.src.rpm
908bd9ee7963203d5c086e25b0849568  krb5-1.2.2-31.src.rpm

ia64:
d81f70e064675a486c9a796fd1ea6297  krb5-devel-1.2.2-31.ia64.rpm
bd5eeae1a8d4b97585bbe67b746edb1d  krb5-libs-1.2.2-31.ia64.rpm
bb30a6820d6c475452458a3cebca55b8  krb5-server-1.2.2-31.ia64.rpm
c7b3177d7e82f890ef669196c2ff0f8f  krb5-workstation-1.2.2-31.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS: 
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/krb5-1.2.2-31.src.rpm
908bd9ee7963203d5c086e25b0849568  krb5-1.2.2-31.src.rpm

i386:
f5fc294848750e1186efd792aaca3fa1  krb5-devel-1.2.2-31.i386.rpm
1da2499c2aa50026be1eda1774cb8fc0  krb5-libs-1.2.2-31.i386.rpm
72749007a7033ff2a31dc4ee20a439c7  krb5-server-1.2.2-31.i386.rpm
be44496d6d25c3e5c1754ce871b3de49  krb5-workstation-1.2.2-31.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS: 
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/krb5-1.2.2-31.src.rpm
908bd9ee7963203d5c086e25b0849568  krb5-1.2.2-31.src.rpm

i386:
f5fc294848750e1186efd792aaca3fa1  krb5-devel-1.2.2-31.i386.rpm
1da2499c2aa50026be1eda1774cb8fc0  krb5-libs-1.2.2-31.i386.rpm
72749007a7033ff2a31dc4ee20a439c7  krb5-server-1.2.2-31.i386.rpm
be44496d6d25c3e5c1754ce871b3de49  krb5-workstation-1.2.2-31.i386.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://www.redhat.com/security/team/key.html#package

7. References:
 
http://web.mit.edu/kerberos/advisories/ 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact.html

Copyright 2004 Red Hat, Inc.

 
< Prev   Next >
    
Partner

 

Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
Today's Security Hacks Are After More Than Bank Info
How Boston Children's Hospital Hit Back at Anonymous
SNMP DDoS Scans Spoof Google Public DNS Server
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2014 Guardian Digital, Inc. All rights reserved.