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AUSCERT External Security Bulletin Redistribution
Moderate: sos security and bug fix update
17 February 2016
AusCERT Security Bulletin Summary
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Increased Privileges -- Existing Account
Modify Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
CVE Names: CVE-2015-7529
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Red Hat Security Advisory
Synopsis: Moderate: sos security and bug fix update
Advisory ID: RHSA-2016:0188-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0188.html
Issue date: 2016-02-16
CVE Names: CVE-2015-7529
An updated sos package that fixes one security issue and one bug is now
available for Red Hat Enterprise Linux 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
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch
Red Hat Enterprise Linux Server (v. 7) - noarch
Red Hat Enterprise Linux Workstation (v. 7) - noarch
The sos package contains a set of utilities 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, the sosreport tool was not collecting the /var/lib/ceph and
/var/run/ceph directories when run with the ceph plug-in enabled, causing
the generated sosreport archive to miss vital troubleshooting information
about ceph. With this update, the ceph plug-in for sosreport collects these
directories, and the generated report contains more useful information.
All users of sos are advised to upgrade to this updated package, which
contains backported patches to correct these issues.
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:
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 Client (v. 7):
Red Hat Enterprise Linux ComputeNode (v. 7):
Red Hat Enterprise Linux Server (v. 7):
Red Hat Enterprise Linux Workstation (v. 7):
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <firstname.lastname@example.org>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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