RHEL 6 : kernel (RHSA-2014:0925)

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 two security issues are now available
for Red Hat Enterprise Linux 6.4 Extended Update Support.

The Red Hat Security Response Team 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.

* It was found that the Linux kernel's ptrace subsystem allowed a
traced process' instruction pointer to be set to a non-canonical
memory address without forcing the non-sysret code path when returning
to user space. A local, unprivileged user could use this flaw to crash
the system or, potentially, escalate their privileges on the system.
(CVE-2014-4699, Important)

Note: The CVE-2014-4699 issue only affected systems using an Intel
CPU.

* A flaw was found in the way the pppol2tp_setsockopt() and
pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP
implementation handled requests with a non-SOL_PPPOL2TP socket option
level. A local, unprivileged user could use this flaw to escalate
their privileges on the system. (CVE-2014-4943, Important)

Red Hat would like to thank Andy Lutomirski for reporting
CVE-2014-4699, and Sasha Levin for reporting CVE-2014-4943.

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-2014-4699.html
https://www.redhat.com/security/data/cve/CVE-2014-4943.html
http://rhn.redhat.com/errata/RHSA-2014-0925.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.7
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 79111 ()

Bugtraq ID:

CVE ID: CVE-2014-4699
CVE-2014-4943

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