[RHSA-2008:0907-01] Moderate: pam_krb5 security update

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Red Hat Security Advisory

 

Synopsis: Moderate: pam_krb5 security update

Advisory ID: RHSA-2008:0907-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0907.html

Issue date: 2008-10-02

CVE Names: CVE-2008-3825

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1. Summary:

 

An updated pam_krb5 package that fixes a security issue is now available

for Red Hat Enterprise Linux 5.

 

This update has been rated as having moderate security impact by the Red

Hat Security Response Team.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

 

3. Description:

 

The pam_krb5 module allows Pluggable Authentication Modules (PAM) aware

applications to use Kerberos to verify user identities by obtaining user

credentials at log in time.

 

A flaw was found in the pam_krb5 "existing_ticket" configuration option. If

a system is configured to use an existing credential cache via the

"existing_ticket" option, it may be possible for a local user to gain

elevated privileges by using a different, local user's credential cache.

(CVE-2008-3825)

 

Red Hat would like to thank Stéphane Bertin for responsibly disclosing this

issue.

 

Users of pam_krb5 should upgrade to this updated package, which contains a

backported patch to resolve this issue.

 

4. Solution:

 

Before applying this update, make sure that all previously-released

errata relevant to your system have been applied.

 

This update is available via Red Hat Network. Details on how to use

the Red Hat Network to apply this update are available at

http://kbase.redhat.com/faq/FAQ_58_10188

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

461960 - CVE-2008-3825 pam_krb5 existing_ticket permission flaw

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/pam_krb5-2.2.14-1.el5_2.1.src.rpm

 

i386:

pam_krb5-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.i386.rpm

 

x86_64:

pam_krb5-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-2.2.14-1.el5_2.1.x86_64.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/pam_krb5-2.2.14-1.el5_2.1.src.rpm

 

i386:

pam_krb5-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.i386.rpm

 

ia64:

pam_krb5-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-2.2.14-1.el5_2.1.ia64.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.ia64.rpm

 

ppc:

pam_krb5-2.2.14-1.el5_2.1.ppc.rpm

pam_krb5-2.2.14-1.el5_2.1.ppc64.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.ppc.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.ppc64.rpm

 

s390x:

pam_krb5-2.2.14-1.el5_2.1.s390.rpm

pam_krb5-2.2.14-1.el5_2.1.s390x.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.s390.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.s390x.rpm

 

x86_64:

pam_krb5-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-2.2.14-1.el5_2.1.x86_64.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.i386.rpm

pam_krb5-debuginfo-2.2.14-1.el5_2.1.x86_64.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/#package

 

7. References:

 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3825

http://www.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://www.redhat.com/security/team/contact/

 

Copyright 2008 Red Hat, Inc.

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