Scientific Linux Security Update : pcs on SL7.x x86_64

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

It was found that the pcs daemon did not sign cookies containing
session data that were sent to clients connecting via the pcsd web UI.
A remote attacker could use this flaw to forge cookies and bypass
authorization checks, possibly gaining elevated privileges in the pcsd
web UI. (CVE-2015-1848)

This update also fixes the following bug :

- Previously, the Corosync tool allowed the two_node
option and the auto_tie_breaker option to exist in the
corosync.conf file at the same time. As a consequence,
if both options were included, auto_tie_breaker was
silently ignored and the two_node fence race decided
which node would survive in the event of a communication
break. With this update, the pcs daemon has been fixed
so that it does not produce corosync.conf files with
both two_node and auto_tie_breaker included. In
addition, if both two_node and auto_tie_breaker are
detected in corosync.conf, Corosync issues a message at
start-up and disables two_node mode. As a result,
auto_tie_breaker effectively overrides two_node mode if
both options are specified.

After installing the updated packages, the pcsd daemon will be
restarted automatically.

See also :

http://www.nessus.org/u?8c579365

Solution :

Update the affected pcs, pcs-debuginfo and / or python-clufter
packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 83454 ()

Bugtraq ID:

CVE ID: CVE-2015-1848

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