-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                               ESB-2015.2151
                       Moderate: pam security update
                              19 August 2015

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

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

Product:           pam
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
                   Red Hat Enterprise Linux WS/Desktop 7
                   Red Hat Enterprise Linux Server 6
                   Red Hat Enterprise Linux WS/Desktop 6
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
                   Denial of Service      -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-3238  

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2015-1640.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Red Hat. It is recommended that administrators
         running pam check for an updated version of the software for their 
         operating system.

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: pam security update
Advisory ID:       RHSA-2015:1640-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1640.html
Issue date:        2015-08-18
CVE Names:         CVE-2015-3238 
=====================================================================

1. Summary:

An updated pam package that fixes one security issue is now available for
Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

Pluggable Authentication Modules (PAM) provide a system whereby
administrators can set up authentication policies without having to
recompile programs to handle authentication.

It was discovered that the _unix_run_helper_binary() function of PAM's
unix_pam module could write to a blocking pipe, possibly causing the
function to become unresponsive. An attacker able to supply large passwords
to the unix_pam module could use this flaw to enumerate valid user
accounts, or cause a denial of service on the system. (CVE-2015-3238)

Red Hat would like to thank Sebastien Macke of Trustwave SpiderLabs for
reporting this issue.

All pam users are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1228571 - CVE-2015-3238 pam: DoS/user enumeration due to blocking pipe in pam_unix module

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
pam-1.1.1-20.el6_7.1.src.rpm

i386:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm

x86_64:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-1.1.1-20.el6_7.1.x86_64.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

i386:
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm

x86_64:
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
pam-1.1.1-20.el6_7.1.src.rpm

x86_64:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-1.1.1-20.el6_7.1.x86_64.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

x86_64:
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
pam-1.1.1-20.el6_7.1.src.rpm

i386:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm

ppc64:
pam-1.1.1-20.el6_7.1.ppc.rpm
pam-1.1.1-20.el6_7.1.ppc64.rpm
pam-debuginfo-1.1.1-20.el6_7.1.ppc.rpm
pam-debuginfo-1.1.1-20.el6_7.1.ppc64.rpm
pam-devel-1.1.1-20.el6_7.1.ppc.rpm
pam-devel-1.1.1-20.el6_7.1.ppc64.rpm

s390x:
pam-1.1.1-20.el6_7.1.s390.rpm
pam-1.1.1-20.el6_7.1.s390x.rpm
pam-debuginfo-1.1.1-20.el6_7.1.s390.rpm
pam-debuginfo-1.1.1-20.el6_7.1.s390x.rpm
pam-devel-1.1.1-20.el6_7.1.s390.rpm
pam-devel-1.1.1-20.el6_7.1.s390x.rpm

x86_64:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-1.1.1-20.el6_7.1.x86_64.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
pam-1.1.1-20.el6_7.1.src.rpm

i386:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm

x86_64:
pam-1.1.1-20.el6_7.1.i686.rpm
pam-1.1.1-20.el6_7.1.x86_64.rpm
pam-debuginfo-1.1.1-20.el6_7.1.i686.rpm
pam-debuginfo-1.1.1-20.el6_7.1.x86_64.rpm
pam-devel-1.1.1-20.el6_7.1.i686.rpm
pam-devel-1.1.1-20.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux Client (v. 7):

Source:
pam-1.1.8-12.el7_1.1.src.rpm

x86_64:
pam-1.1.8-12.el7_1.1.i686.rpm
pam-1.1.8-12.el7_1.1.x86_64.rpm
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm
pam-devel-1.1.8-12.el7_1.1.i686.rpm
pam-devel-1.1.8-12.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
pam-1.1.8-12.el7_1.1.src.rpm

x86_64:
pam-1.1.8-12.el7_1.1.i686.rpm
pam-1.1.8-12.el7_1.1.x86_64.rpm
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm
pam-devel-1.1.8-12.el7_1.1.i686.rpm
pam-devel-1.1.8-12.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
pam-1.1.8-12.el7_1.1.src.rpm

ppc64:
pam-1.1.8-12.el7_1.1.ppc.rpm
pam-1.1.8-12.el7_1.1.ppc64.rpm
pam-debuginfo-1.1.8-12.el7_1.1.ppc.rpm
pam-debuginfo-1.1.8-12.el7_1.1.ppc64.rpm
pam-devel-1.1.8-12.el7_1.1.ppc.rpm
pam-devel-1.1.8-12.el7_1.1.ppc64.rpm

s390x:
pam-1.1.8-12.el7_1.1.s390.rpm
pam-1.1.8-12.el7_1.1.s390x.rpm
pam-debuginfo-1.1.8-12.el7_1.1.s390.rpm
pam-debuginfo-1.1.8-12.el7_1.1.s390x.rpm
pam-devel-1.1.8-12.el7_1.1.s390.rpm
pam-devel-1.1.8-12.el7_1.1.s390x.rpm

x86_64:
pam-1.1.8-12.el7_1.1.i686.rpm
pam-1.1.8-12.el7_1.1.x86_64.rpm
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm
pam-devel-1.1.8-12.el7_1.1.i686.rpm
pam-devel-1.1.8-12.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
pam-1.1.8-12.ael7b_1.1.src.rpm

ppc64le:
pam-1.1.8-12.ael7b_1.1.ppc64le.rpm
pam-debuginfo-1.1.8-12.ael7b_1.1.ppc64le.rpm
pam-devel-1.1.8-12.ael7b_1.1.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
pam-1.1.8-12.el7_1.1.src.rpm

x86_64:
pam-1.1.8-12.el7_1.1.i686.rpm
pam-1.1.8-12.el7_1.1.x86_64.rpm
pam-debuginfo-1.1.8-12.el7_1.1.i686.rpm
pam-debuginfo-1.1.8-12.el7_1.1.x86_64.rpm
pam-devel-1.1.8-12.el7_1.1.i686.rpm
pam-devel-1.1.8-12.el7_1.1.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2015-3238
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2015 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iD4DBQFV04JBXlSAg2UNWIIRAqOzAJ9EbtvfQumSyuGIDUvsrz4LuGDaigCXf+Hq
jEKopvJJZBS387fy3yznhQ==
=7uik
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=QW+e
-----END PGP SIGNATURE-----