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Red Hat: RHSA-2015:1700-01 Critical: Pcs Command Injection Flaws

red hat
Calendar Grey September 1, 2015
Scroller Redhat Esm H88
Oracle has rolled out patches for systems that rectify directory traversal and privilege escalation vulnerabilities with significant implications.
Updated pcs packages that fix two security issues are now available for Red Hat Enterprise Linux 6 and 7

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

Summary

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.

Topics%20covered

Topics Covered

security advisory red hat critical update important security impact command injection authorization flaw pcs package

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

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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1700-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1700.html
Issue date: 2015-09-01

Topic

Updated pcs packages that fix two security issues are now available for RedHat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory red hat critical update important security impact command injection authorization flaw pcs package

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

Bugs Fixed

1252805 - CVE-2015-5189 pcs: Incorrect authorization when using pcs web UI

1252813 - CVE-2015-5190 pcs: Command injection with root privileges.

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