============================================================================
Ubuntu Security Notice USN-2023-1
November 08, 2013

linux vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

An information leak was discovered in the handling of ICMPv6 Router
Advertisement (RA) messages in the Linux kernel's IPv6 network stack. A
remote attacker could exploit this flaw to cause a denial of service
(excessive retries and address-generation outage), and consequently obtain
sensitive information. (CVE-2013-0343)

Dan Carpenter discovered an information leak in the HP Smart Aray and
Compaq SMART2 disk-array driver in the Linux kernel. A local user could
exploit this flaw to obtain sensitive information from kernel memory.
(CVE-2013-2147)

Kees Cook discovered flaw in the Human Interface Device (HID) subsystem
when CONFIG_HID_ZEROPLUS is enabled. A physically proximate attacker could
leverage this flaw to cause a denial of service via a specially crafted
device. (CVE-2013-2889)

Kees Cook discovered another flaw in the Human Interface Device (HID)
subsystem of the Linux kernel when any of CONFIG_LOGITECH_FF,
CONFIG_LOGIG940_FF, or CONFIG_LOGIWHEELS_FF are enabled. A physcially
proximate attacker can leverage this flaw to cause a denial of service vias
a specially crafted device. (CVE-2013-2893)

Kees Cook discovered a flaw in the Human Interface Device (HID) subsystem
of the Linux kernel when CONFIG_HID_LENOVO_TPKBD is enabled. A physically
proximate attacker could exploit this flaw to cause a denial of service via
a specially crafted device. (CVE-2013-2894)

Kees Cook discovered another flaw in the Human Interface Device (HID)
subsystem of the Linux kernel when CONFIG_HID_LOGITECH_DJ is enabled. A
physically proximate attacker could cause a denial of service (OOPS) or
obtain sensitive information from kernel memory via a specially crafted
device. (CVE-2013-2895)

Kees Cook discovered yet another flaw in the Human Interface Device (HID)
subsystem of the Linux kernel when CONFIG_HID_MULTITOUCH is enabled. A
physically proximate attacker could leverage this flaw to cause a denial of
service (OOPS) via a specially crafted device. (CVE-2013-2897)

Wannes Rombouts reported a vulnerability in the networking tuntap interface
of the Linux kernel. A local user with the CAP_NET_ADMIN capability could
leverage this flaw to gain full admin privileges. (CVE-2013-4343)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.04:
  linux-image-3.8.0-33-generic    3.8.0-33.48

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
  http://www.ubuntu.com/usn/usn-2023-1
  CVE-2013-0343, CVE-2013-2147, CVE-2013-2889, CVE-2013-2893,
  CVE-2013-2894, CVE-2013-2895, CVE-2013-2897, CVE-2013-4343

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.8.0-33.48