Originally Published: Friday, 19 May 2000 Author: Derrick H. Lewis
Published to: news_enhance_security/Security News Page: 1/1 - [Printable]

Red Hat, Inc. Security Advisory

Security vulnerabilities have been found in the Kerberos 5 implementation shipped with Red Hat Linux 6.2. Updated Kerberos 5 packages are now available for Red Hat Linux.

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--------------------------------------------------------------------- Red Hat, Inc. Security Advisory

Synopsis: Updated Kerberos 5 packages are now available for Red Hat Linux. Advisory ID: RHSA-2000:025-05 Issue date: 2000-05-16 Updated on: 2000-05-17 Product: Red Hat Linux Keywords: N/A Cross references: N/A ---------------------------------------------------------------------

1. Topic:

Security vulnerabilities have been found in the Kerberos 5 implementation shipped with Red Hat Linux 6.2.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - i386 alpha sparc

3. Problem description:

A number of possible buffer overruns were found in libraries included in the affected packages. A denial-of-service vulnerability was also found in the ksu program.

* A remote user may gain unauthorized root access to a machine running services authenticated with Kerberos 4.

* A remote user may gain unauthorized root access to a machine running krshd, regardless of whether the program is configured to accept Kerberos 4 authentication.

* A local user may gain unauthorized root access by exploiting v4rcp or ksu.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

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

10653 - 'stat' unresolved on "libkrb5.so.2.2" load

6. RPMs required:

Red Hat Linux 6.2:

intel: ftp://ftp.redhat.com/6.2/i386/krb5-configs-1.1.1-15.i386.rpm ftp://ftp.redhat.com/6.2/i386/krb5-devel-1.1.1-15.i386.rpm ftp://ftp.redhat.com/6.2/i386/krb5-libs-1.1.1-15.i386.rpm ftp://ftp.redhat.com/6.2/i386/krb5-server-1.1.1-15.i386.rpm ftp://ftp.redhat.com/6.2/i386/krb5-workstation-1.1.1-15.i386.rpm

alpha: ftp://ftp.redhat.com/6.2/alpha/krb5-configs-1.1.1-15.alpha.rpm ftp://ftp.redhat.com/6.2/alpha/krb5-devel-1.1.1-15.alpha.rpm ftp://ftp.redhat.com/6.2/alpha/krb5-libs-1.1.1-15.alpha.rpm ftp://ftp.redhat.com/6.2/alpha/krb5-server-1.1.1-15.alpha.rpm ftp://ftp.redhat.com/6.2/alpha/krb5-workstation-1.1.1-15.alpha.rpm

sparc: ftp://ftp.redhat.com/6.2/sparc/krb5-configs-1.1.1-15.sparc.rpm ftp://ftp.redhat.com/6.2/sparc/krb5-devel-1.1.1-15.sparc.rpm ftp://ftp.redhat.com/6.2/sparc/krb5-libs-1.1.1-15.sparc.rpm ftp://ftp.redhat.com/6.2/sparc/krb5-server-1.1.1-15.sparc.rpm ftp://ftp.redhat.com/6.2/sparc/krb5-workstation-1.1.1-15.sparc.rpm

7. Verification:

MD5 sum Package Name -------------------------------------------------------------------------- 3fd11d622ba3cc897673a6ab6aef4541 6.2/alpha/krb5-configs-1.1.1-15.alpha.rpm 8a8096d690384617fcdcf6e0a8aba8ff 6.2/alpha/krb5-devel-1.1.1-15.alpha.rpm 5cbe85b8045f1980e50f2029d12316f4 6.2/alpha/krb5-libs-1.1.1-15.alpha.rpm 7686c92345d450203536bc025fd0b571 6.2/alpha/krb5-server-1.1.1-15.alpha.rpm 39acce6c4f96d96a3a0fb17297c20ed8 6.2/alpha/krb5-workstation-1.1.1-15.alpha.rpm ab4dac8b93f48de033d9b8c35200c756 6.2/i386/krb5-configs-1.1.1-15.i386.rpm c44572eebb30735cbfb0543ae00c1428 6.2/i386/krb5-devel-1.1.1-15.i386.rpm f87a05040e7d170f10c2a18eb7a82e95 6.2/i386/krb5-libs-1.1.1-15.i386.rpm b08b7910f325d25aa2ff18db635609bc 6.2/i386/krb5-server-1.1.1-15.i386.rpm 644b7de0d1a50894ea9e03d7e00ed828 6.2/i386/krb5-workstation-1.1.1-15.i386.rpm 28ceddb2f09d1f122f757d5229dc0dd7 6.2/sparc/krb5-configs-1.1.1-15.sparc.rpm cc6a1fea9cd63afb2c19f20fcf43b503 6.2/sparc/krb5-devel-1.1.1-15.sparc.rpm c3fbb341a6768a2fa9403e4ae2cce9a1 6.2/sparc/krb5-libs-1.1.1-15.sparc.rpm 2846852ed38dbd190d6bad3226fa8e53 6.2/sparc/krb5-server-1.1.1-15.sparc.rpm 3abbadd05e525df39805f5b4789e25e9 6.2/sparc/krb5-workstation-1.1.1-15.sparc.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/corp/contact.html

You can verify each package with the following command: rpm --checksig

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command: rpm --checksig --nogpg

8. References:

N/A





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