ESB-2018.1103 - [RedHat] pcs: Multiple vulnerabilities 2018-04-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1103
                      Important: pcs security update
                               11 April 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           pcs
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
Impact/Access:     Increased Privileges      -- Existing Account      
                   Overwrite Arbitrary Files -- Existing Account      
                   Create Arbitrary Files    -- Existing Account      
                   Access Confidential Data  -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1000119 CVE-2018-1086 CVE-2018-1079

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:1060

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                   Red Hat Security Advisory

Synopsis:          Important: pcs security update
Advisory ID:       RHSA-2018:1060-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:1060
Issue date:        2018-04-10
CVE Names:         CVE-2018-1079 CVE-2018-1086 CVE-2018-1000119 
=====================================================================

1. Summary:

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 impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server High Availability (v. 7) - ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Resilient Storage (v. 7) - ppc64le, s390x, x86_64

3. Description:

The pcs packages provide a command-line configuration system for the
Pacemaker and Corosync utilities.

Security Fix(es):

* pcs: Privilege escalation via authorized user malicious REST call
(CVE-2018-1079)

* pcs: Debug parameter removal bypass, allowing information disclosure
(CVE-2018-1086)

* rack-protection: Timing attack in authenticity_token.rb
(CVE-2018-1000119)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

The CVE-2018-1079 issue was discovered by Ondrej Mular (Red Hat) and the
CVE-2018-1086 issue was discovered by Cedric Buissart (Red Hat).

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1534027 - CVE-2018-1000119 rack-protection: Timing attack in authenticity_token.rb
1550243 - CVE-2018-1079 pcs: Privilege escalation via authorized user malicious REST call
1557366 - CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information disclosure

6. Package List:

Red Hat Enterprise Linux Server High Availability (v. 7):

Source:
pcs-0.9.162-5.el7_5.1.src.rpm

ppc64le:
pcs-0.9.162-5.el7_5.1.ppc64le.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.ppc64le.rpm
pcs-snmp-0.9.162-5.el7_5.1.ppc64le.rpm

s390x:
pcs-0.9.162-5.el7_5.1.s390x.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.s390x.rpm
pcs-snmp-0.9.162-5.el7_5.1.s390x.rpm

x86_64:
pcs-0.9.162-5.el7_5.1.x86_64.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.x86_64.rpm
pcs-snmp-0.9.162-5.el7_5.1.x86_64.rpm

Red Hat Enterprise Linux Server Resilient Storage (v. 7):

Source:
pcs-0.9.162-5.el7_5.1.src.rpm

ppc64le:
pcs-0.9.162-5.el7_5.1.ppc64le.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.ppc64le.rpm
pcs-snmp-0.9.162-5.el7_5.1.ppc64le.rpm

s390x:
pcs-0.9.162-5.el7_5.1.s390x.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.s390x.rpm
pcs-snmp-0.9.162-5.el7_5.1.s390x.rpm

x86_64:
pcs-0.9.162-5.el7_5.1.x86_64.rpm
pcs-debuginfo-0.9.162-5.el7_5.1.x86_64.rpm
pcs-snmp-0.9.162-5.el7_5.1.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-2018-1079
https://access.redhat.com/security/cve/CVE-2018-1086
https://access.redhat.com/security/cve/CVE-2018-1000119
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 2018 Red Hat, Inc.
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