Ubuntu 12.04 LTS : linux vulnerabilities (USN-3049-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

Ben Hawkes discovered that the Linux netfilter implementation did not
correctly perform validation when handling IPT_SO_SET_REPLACE events.
A local unprivileged attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-3134)

Vitaly Kuznetsov discovered that the Linux kernel did not properly
suppress hugetlbfs support in X86 paravirtualized guests. An attacker
in the guest OS could cause a denial of service (guest system crash).
(CVE-2016-3961)

It was discovered that the keyring implementation in the Linux kernel
did not ensure a data structure was initialized before referencing it
after an error condition occurred. A local attacker could use this to
cause a denial of service (system crash). (CVE-2016-4470)

Kangjie Lu discovered an information leak in the netlink
implementation of the Linux kernel. A local attacker could use this to
obtain sensitive information from kernel memory. (CVE-2016-5243).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.5
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 92860 ()

Bugtraq ID:

CVE ID: CVE-2016-3134
CVE-2016-3961
CVE-2016-4470
CVE-2016-5243

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