Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 481
Alerts This Week
Warning Icon 1 481

Red Hat Enterprise Linux 7: RHSA-2016-2596-02 Moderate: Pcs CSRF Flaw

red hat
Calendar Grey November 3, 2016
Scroller Redhat
A patch for systems running Red Hat Enterprise Linux 7 resolves several moderate vulnerabilities, namely vulnerabilities associated with CSRF.
An update for pcs is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.
The following packages have been upgraded to a newer upstream version: pcs (0.9.152). (BZ#1299847)
Security Fix(es):
* A Cross-Site Request Forgery (CSRF) flaw was found in the pcsd web UI. A remote attacker could provide a specially crafted web page that, when visited by a user with a valid pcsd session, would allow the attacker to trigger requests on behalf of the user, for example removing resources or restarting/removing nodes. (CVE-2016-0720)
* It was found that pcsd did not invalidate cookies on the server side when a user logged out. This could potentially allow an attacker to perform session fixation attacks on pcsd. (CVE-2016-0721)
These issues were discovered by Martin Prpic (Red Hat Product Security).
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat bug fix patch session fixation CSRF issue pcs update

References

https://access.redhat.com/security/cve/CVE-2016-0720 https://access.redhat.com/security/cve/CVE-2016-0721 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html

Package List

Red Hat Enterprise Linux Server High Availability (v. 7):
Source: pcs-0.9.152-10.el7.src.rpm
s390x: pcs-0.9.152-10.el7.s390x.rpm pcs-debuginfo-0.9.152-10.el7.s390x.rpm
x86_64: pcs-0.9.152-10.el7.x86_64.rpm pcs-debuginfo-0.9.152-10.el7.x86_64.rpm
Red Hat Enterprise Linux Server Resilient Storage (v. 7):
Source: pcs-0.9.152-10.el7.src.rpm
s390x: pcs-0.9.152-10.el7.s390x.rpm pcs-debuginfo-0.9.152-10.el7.s390x.rpm
x86_64: pcs-0.9.152-10.el7.x86_64.rpm pcs-debuginfo-0.9.152-10.el7.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


Advisory ID: RHSA-2016:2596-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:2596.html
Issue date: 2016-11-03

Topic

An update for pcs is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat bug fix patch session fixation CSRF issue pcs update

Relevant Releases Architectures

Red Hat Enterprise Linux Server High Availability (v. 7) - s390x, x86_64

Red Hat Enterprise Linux Server Resilient Storage (v. 7) - s390x, x86_64

Bugs Fixed

1158500 - add support for utilization attributes

1164402 - Support for sbd configuration is needed in pcs

1207405 - RFE: please adjust timeouts for pcsd check (or allow to disable them)

1219581 - [CLI] particular help screens inconsistent in indication of default sub^n-commands

1220512 - pcs resource cleanup improvements

1225423 - pcs should allow to remove a dead node from a cluster

1225946 - [CLI] minor cleanups in built-in documentation

1229822 - [RFE] make "cluster setup --start", "cluster start" and "cluster standby" support --wait as well

1231858 - resource/fence agent options form needs an overhaul

1248990 - Specifying a non-existing id in ACL role permission produces an invalid CIB

1249085 - 'pcs resource delete' doesn't delete resource referenced in acl

1252050 - Rewrite pcsd launch script

1264360 - pcs Web UI doesn't indicate unmanaged resources

1269242 - pcs needs to be able to view status and config on nodes that are not part of any cluster, but have a cib.xml file

1281364 - colocation set constraints missing in web UI

1281371 - Cluster Properties page in web UI needs an overhaul

1281391 - web UI lacks ability to move resources within a resource group

1286664 - pcsd: deleting groups/clones from older cluster returns Internal Server Error

1287320 - When referencing a stonith/resource agent without a provider and the fence/resource agents fails to get metadata causes pcs to traceback

Read the Full Advisory

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.