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Red Hat Security Advisory
Synopsis: Important: pcs security update
Advisory ID: RHSA-2015:1700-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1700.html
Issue date: 2015-09-01
CVE Names: CVE-2015-5189 CVE-2015-5190
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1. Summary:
Updated pcs packages that fix two security issues are now available for Red
Hat Enterprise Linux 6 and 7.
Red Hat Product Security has rated this update as having Important 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 High Availability (v. 6) – i386, x86_64
Red Hat Enterprise Linux Resilient Storage (v. 6) – i386, x86_64
Red Hat Enterprise Linux Server High Availability (v. 7) – x86_64
Red Hat Enterprise Linux Server Resilient Storage (v. 7) – x86_64
3. Description:
The pcs packages provide a command-line configuration system for the
Pacemaker and Corosync utilities.
A command injection flaw was found in the pcsd web UI. An attacker able to
trick a victim that was logged in to the pcsd web UI into visiting a
specially crafted URL could use this flaw to execute arbitrary code with
root privileges on the server hosting the web UI. (CVE-2015-5190)
A race condition was found in the way the pcsd web UI backend performed
authorization of user requests. An attacker could use this flaw to send a
request that would be evaluated as originating from a different user,
potentially allowing the attacker to perform actions with permissions of a
more privileged user. (CVE-2015-5189)
These issues were discovered by Tomáš Jelínek of Red Hat.
All pcs users are advised to upgrade to these updated packages, which
contain 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/):
1252805 – CVE-2015-5189 pcs: Incorrect authorization when using pcs web UI
1252813 – CVE-2015-5190 pcs: Command injection with root privileges.
6. Package List:
Red Hat Enterprise Linux High Availability (v. 6):
Source:
pcs-0.9.139-9.el6_7.1.src.rpm
i386:
pcs-0.9.139-9.el6_7.1.i686.rpm
pcs-debuginfo-0.9.139-9.el6_7.1.i686.rpm
x86_64:
pcs-0.9.139-9.el6_7.1.x86_64.rpm
pcs-debuginfo-0.9.139-9.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Resilient Storage (v. 6):
Source:
pcs-0.9.139-9.el6_7.1.src.rpm
i386:
pcs-0.9.139-9.el6_7.1.i686.rpm
pcs-debuginfo-0.9.139-9.el6_7.1.i686.rpm
x86_64:
pcs-0.9.139-9.el6_7.1.x86_64.rpm
pcs-debuginfo-0.9.139-9.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Server High Availability (v. 7):
Source:
pcs-0.9.137-13.el7_1.4.src.rpm
x86_64:
pcs-0.9.137-13.el7_1.4.x86_64.rpm
pcs-debuginfo-0.9.137-13.el7_1.4.x86_64.rpm
python-clufter-0.9.137-13.el7_1.4.x86_64.rpm
Red Hat Enterprise Linux Server Resilient Storage (v. 7):
Source:
pcs-0.9.137-13.el7_1.4.src.rpm
x86_64:
pcs-0.9.137-13.el7_1.4.x86_64.rpm
pcs-debuginfo-0.9.137-13.el7_1.4.x86_64.rpm
python-clufter-0.9.137-13.el7_1.4.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-2015-5189
https://access.redhat.com/security/cve/CVE-2015-5190
https://access.redhat.com/security/updates/classification/#important
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.
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