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                   Red Hat Security Advisory

Synopsis:          Low: shadow-utils security and bug fix update
Advisory ID:       RHSA-2007:0431-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2007-0431.html
Issue date:        2007-06-07
Updated on:        2007-06-11
Product:           Red Hat Enterprise Linux
Keywords:          mailbox race condition
CVE Names:         CVE-2006-1174 
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1. Summary:

An updated shadow-utils package that fixes a security issue and several
bugs is now available.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

The shadow-utils package includes the necessary programs for converting
UNIX password files to the shadow password format, as well as programs 
for managing user and group accounts. 

A flaw was found in the useradd tool in shadow-utils. A new user's
mailbox, when created, could have random permissions for a short period.
This could allow a local attacker to read or modify the mailbox.
(CVE-2006-1174)

This update also fixes the following bugs:

* shadow-utils debuginfo package was empty.

* chage.1 and chage -l gave incorrect information about sp_inact.

All users of shadow-utils are advised to upgrade to this updated 
package, which contains backported 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/):

176949 - shadow-utils-debuginfo is empty
216635 - chage does not show the Account Expires if its shadow field is 0.
229194 - CVE-2006-1174 shadow-utils mailbox creation race condition

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/shadow-utils-4.0.3-29.RHEL3.src.rpm
966d844be451d09e732289fcf217af85  shadow-utils-4.0.3-29.RHEL3.src.rpm

i386:
70b7cf4df9bd1bee11c1f290ae3a1bbe  shadow-utils-4.0.3-29.RHEL3.i386.rpm
2878f009ae2277881d44c4f05fec1671  shadow-utils-debuginfo-4.0.3-29.RHEL3.i386.rpm

ia64:
83ccf4e549535ebe265043c2ebdd6a40  shadow-utils-4.0.3-29.RHEL3.ia64.rpm
5f83cb4808a46b52282e1acbce406a70  shadow-utils-debuginfo-4.0.3-29.RHEL3.ia64.rpm

ppc:
c686de929e196cd87b203e1ab85bbd01  shadow-utils-4.0.3-29.RHEL3.ppc.rpm
1a7206beb87ea524d7fafa5f69a7beff  shadow-utils-debuginfo-4.0.3-29.RHEL3.ppc.rpm

s390:
7badcd687970e0393547cac663e4d5b8  shadow-utils-4.0.3-29.RHEL3.s390.rpm
a24128e6b4f152c0cdbeec5d671b6578  shadow-utils-debuginfo-4.0.3-29.RHEL3.s390.rpm

s390x:
cdd3cc34271e7b59c0374f03a46e8715  shadow-utils-4.0.3-29.RHEL3.s390x.rpm
107d87178483ddb3c93342dfb7ba5120  shadow-utils-debuginfo-4.0.3-29.RHEL3.s390x.rpm

x86_64:
e6661e59bc80a8bb3f49566183a082a0  shadow-utils-4.0.3-29.RHEL3.x86_64.rpm
a380a8d6aabd84211c8b5850299a3ea1  shadow-utils-debuginfo-4.0.3-29.RHEL3.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/shadow-utils-4.0.3-29.RHEL3.src.rpm
966d844be451d09e732289fcf217af85  shadow-utils-4.0.3-29.RHEL3.src.rpm

i386:
70b7cf4df9bd1bee11c1f290ae3a1bbe  shadow-utils-4.0.3-29.RHEL3.i386.rpm
2878f009ae2277881d44c4f05fec1671  shadow-utils-debuginfo-4.0.3-29.RHEL3.i386.rpm

x86_64:
e6661e59bc80a8bb3f49566183a082a0  shadow-utils-4.0.3-29.RHEL3.x86_64.rpm
a380a8d6aabd84211c8b5850299a3ea1  shadow-utils-debuginfo-4.0.3-29.RHEL3.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/shadow-utils-4.0.3-29.RHEL3.src.rpm
966d844be451d09e732289fcf217af85  shadow-utils-4.0.3-29.RHEL3.src.rpm

i386:
70b7cf4df9bd1bee11c1f290ae3a1bbe  shadow-utils-4.0.3-29.RHEL3.i386.rpm
2878f009ae2277881d44c4f05fec1671  shadow-utils-debuginfo-4.0.3-29.RHEL3.i386.rpm

ia64:
83ccf4e549535ebe265043c2ebdd6a40  shadow-utils-4.0.3-29.RHEL3.ia64.rpm
5f83cb4808a46b52282e1acbce406a70  shadow-utils-debuginfo-4.0.3-29.RHEL3.ia64.rpm

x86_64:
e6661e59bc80a8bb3f49566183a082a0  shadow-utils-4.0.3-29.RHEL3.x86_64.rpm
a380a8d6aabd84211c8b5850299a3ea1  shadow-utils-debuginfo-4.0.3-29.RHEL3.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/shadow-utils-4.0.3-29.RHEL3.src.rpm
966d844be451d09e732289fcf217af85  shadow-utils-4.0.3-29.RHEL3.src.rpm

i386:
70b7cf4df9bd1bee11c1f290ae3a1bbe  shadow-utils-4.0.3-29.RHEL3.i386.rpm
2878f009ae2277881d44c4f05fec1671  shadow-utils-debuginfo-4.0.3-29.RHEL3.i386.rpm

ia64:
83ccf4e549535ebe265043c2ebdd6a40  shadow-utils-4.0.3-29.RHEL3.ia64.rpm
5f83cb4808a46b52282e1acbce406a70  shadow-utils-debuginfo-4.0.3-29.RHEL3.ia64.rpm

x86_64:
e6661e59bc80a8bb3f49566183a082a0  shadow-utils-4.0.3-29.RHEL3.x86_64.rpm
a380a8d6aabd84211c8b5850299a3ea1  shadow-utils-debuginfo-4.0.3-29.RHEL3.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-2006-1174
http://www.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2007 Red Hat, Inc.