RHEL 6 : MRG (RHSA-2014:1083)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated kernel-rt packages that fix multiple security issues and one
bug are now available for Red Hat Enterprise MRG 2.5.

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.

The kernel-rt packages contain the Linux kernel, the core of any Linux
operating system.

* A NULL pointer dereference flaw was found in the way
the Linux kernel's Stream Control Transmission Protocol
(SCTP) implementation handled simultaneous connections
between the same hosts. A remote attacker could use this
flaw to crash the system. (CVE-2014-5077, Important)

* Multiple use-after-free flaws and an integer overflow
flaw were found in the way the Linux kernel's Advanced
Linux Sound Architecture (ALSA) implementation handled
user controls. A local, privileged user could use either
of these flaws to crash the system. (CVE-2014-4653,
CVE-2014-4654, CVE-2014-4655, CVE-2014-4656, Moderate)

* An information leak flaw was found in the way the Linux
kernel's Advanced Linux Sound Architecture (ALSA)
implementation handled access of the user control's
state. A local, privileged user could use this flaw to
leak kernel memory to user space. (CVE-2014-4652, Low)

This update also fixes the following bug :

* Prior to this update, the netconsole module was
unavailable on MRG Realtime kernels due to locking
issues that disabled it. These locking issues have been
corrected, allowing the netconsole module to be
re-enabled and functional on Realtime kernels.
(BZ#1088923)

Users are advised to upgrade to these updated packages, which upgrade
the kernel-rt kernel to version kernel-rt-3.10.33-rt32.45 and correct
these issues. The system must be rebooted for this update to take
effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2014-4652.html
https://www.redhat.com/security/data/cve/CVE-2014-4653.html
https://www.redhat.com/security/data/cve/CVE-2014-4654.html
https://www.redhat.com/security/data/cve/CVE-2014-4655.html
https://www.redhat.com/security/data/cve/CVE-2014-4656.html
https://www.redhat.com/security/data/cve/CVE-2014-5077.html
http://rhn.redhat.com/errata/RHSA-2014-1083.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.6
(CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:C)
CVSS Temporal Score : 5.5
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 77298 ()

Bugtraq ID: 68162
68163
68164
68170
68881

CVE ID: CVE-2014-4652
CVE-2014-4653
CVE-2014-4654
CVE-2014-4655
CVE-2014-4656
CVE-2014-5077

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