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ESB-2016.0341 - [Linux][RedHat] sos: Increased privileges - Existing account

Date: 10 February 2016
References: ESB-2016.0389  

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

                               ESB-2016.0341
                 Moderate: sos security and bug fix update
                             10 February 2016

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

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

Product:           sos
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 6
                   Red Hat Enterprise Linux WS/Desktop 6
                   Linux variants
Impact/Access:     Increased Privileges     -- Existing Account
                   Modify Arbitrary Files   -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-7529  

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2016-0152.html

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

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

Synopsis:          Moderate: sos security and bug fix update
Advisory ID:       RHSA-2016:0152-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0152.html
Issue date:        2016-02-09
CVE Names:         CVE-2015-7529 
=====================================================================

1. Summary:

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

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 Desktop (v. 6) - noarch
Red Hat Enterprise Linux HPC Node (v. 6) - noarch
Red Hat Enterprise Linux Server (v. 6) - noarch
Red Hat Enterprise Linux Workstation (v. 6) - noarch

3. Description:

The sos package contains a set of tools that gather information from system
hardware, logs and configuration files. The information can then be used
for diagnostic purposes and debugging.

An insecure temporary file use flaw was found in the way sos created 
certain sosreport files. A local attacker could possibly use this flaw 
to perform a symbolic link attack to reveal the contents of sosreport 
files, or in some cases modify arbitrary files and escalate their 
privileges on the system. (CVE-2015-7529)

This issue was discovered by Mateusz Guzik of Red Hat.

This update also fixes the following bug:

* Previously, when the hpasm plug-in ran the "hpasmcli" command in a Python
Popen constructor or a system pipeline, the command would hang and
eventually time out after 300 seconds. Sos was forced to wait for the time
out to finish, unnecessarily prolonging its run time. With this update, the
timeout of the "hpasmcli" command has been set to 0, eliminating the delay
and speeding up sos completion time. (BZ#1291828)

All sos users are advised to upgrade to this updated package, which
contains backported patches to correct these issues.

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/):

1282542 - CVE-2015-7529 sos: Usage of predictable temporary files allows privilege escalation

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
sos-3.2-28.el6_7.2.src.rpm

noarch:
sos-3.2-28.el6_7.2.noarch.rpm

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

Source:
sos-3.2-28.el6_7.2.src.rpm

noarch:
sos-3.2-28.el6_7.2.noarch.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
sos-3.2-28.el6_7.2.src.rpm

noarch:
sos-3.2-28.el6_7.2.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
sos-3.2-28.el6_7.2.src.rpm

noarch:
sos-3.2-28.el6_7.2.noarch.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-2015-7529
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 2016 Red Hat, Inc.
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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