RHEL 6 : kernel (RHSA-2014:1167)

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 packages that fix multiple security issues and several
bugs are now available for Red Hat Enterprise Linux 6.

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

* A flaw was found in the way the Linux kernel's futex subsystem
handled reference counting when requeuing futexes during futex_wait().
A local, unprivileged user could use this flaw to zero out the
reference counter of an inode or an mm struct that backs up the memory
area of the futex, which could lead to a use-after-free flaw,
resulting in a system crash or, potentially, privilege escalation.
(CVE-2014-0205, Important)

* A NULL pointer dereference flaw was found in the way the Linux
kernel's networking implementation handled logging while processing
certain invalid packets coming in via a VxLAN interface. A remote
attacker could use this flaw to crash the system by sending a
specially crafted packet to such an interface. (CVE-2014-3535,
Important)

* An out-of-bounds memory access flaw was found in the Linux kernel's
system call auditing implementation. On a system with existing audit
rules defined, a local, unprivileged user could use this flaw to leak
kernel memory to user space or, potentially, crash the system.
(CVE-2014-3917, Moderate)

* An integer underflow flaw was found in the way the Linux kernel's
Stream Control Transmission Protocol (SCTP) implementation processed
certain COOKIE_ECHO packets. By sending a specially crafted SCTP
packet, a remote attacker could use this flaw to prevent legitimate
connections to a particular SCTP server socket to be made.
(CVE-2014-4667, Moderate)

Red Hat would like to thank Gopal Reddy Kodudula of Nokia Siemens
Networks for reporting CVE-2014-4667. The security impact of the
CVE-2014-0205 issue was discovered by Mateusz Guzik of Red Hat.

This update also fixes several bugs. Documentation for these changes
will be available shortly from the Technical Notes document linked to
in the References section.

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. The system
must be rebooted for this update to take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2014-0205.html
https://www.redhat.com/security/data/cve/CVE-2014-3535.html
https://www.redhat.com/security/data/cve/CVE-2014-3917.html
https://www.redhat.com/security/data/cve/CVE-2014-4667.html
http://www.nessus.org/u?cfcf474c
http://rhn.redhat.com/errata/RHSA-2014-1167.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 5.8
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 77626 ()

Bugtraq ID: 67699
68224

CVE ID: CVE-2014-0205
CVE-2014-3535
CVE-2014-3917
CVE-2014-4667

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