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AUSCERT External Security Bulletin Redistribution
Moderate: ppc64-diag security, bug fix, and enhancement update
6 March 2015
AusCERT Security Bulletin Summary
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Modify Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
CVE Names: CVE-2014-4039 CVE-2014-4038
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running ppc-64-diag check for an updated version of the software for
their operating system.
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Red Hat Security Advisory
Synopsis: Moderate: ppc64-diag security, bug fix, and enhancement update
Advisory ID: RHSA-2015:0383-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0383.html
Issue date: 2015-03-05
CVE Names: CVE-2014-4038 CVE-2014-4039
Updated ppc64-diag packages that fix two security issues, several bugs, and
add various enhancements are now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Server (v. 7) - ppc64
The ppc64-diag packages provide diagnostic tools for Linux on the 64-bit
PowerPC platforms. The platform diagnostics write events reported by the
firmware to the service log, provide automated responses to urgent events,
and notify system administrators or connected service frameworks about the
Multiple insecure temporary file use flaws were found in the way the
ppc64-diag utility created certain temporary files. A local attacker could
possibly use either of these flaws to perform a symbolic link attack and
overwrite arbitrary files with the privileges of the user running
ppc64-diag, or obtain sensitive information from the temporary files.
The ppc64-diag packages have been upgraded to upstream version 2.6.7, which
provides a number of bug fixes and enhancements over the previous version
including support for hot plugging of QEMU PCI devices. (BZ#1088493,
This update also fixes the following bugs:
* Prior to this update, the rtas_errd daemon was not started by default on
system boot. With this update, rtas_errd has been modified to start
automatically by default. (BZ#1170146)
* Previously, the /var/log/dump file was not automatically created when
installing the ppc64-diag package. This bug has been fixed, and
/var/log/dump is now created at package install time as expected.
In addition, this update adds the following enhancement:
* This update adds support for building the ppc64-diag packages on the
little-endian variant of IBM Power Systems platform architecture.
Users of ppc64-diag are advised to upgrade to these updated packages, which
correct these issues and add these enhancements.
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/):
1109371 - CVE-2014-4038 CVE-2014-4039 ppc64-diag: multiple temporary file races
6. Package List:
Red Hat Enterprise Linux Server (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 2015 Red Hat, Inc.
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