USN-2038-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2038-1

3rd December, 2013

linux vulnerabilities

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

• Ubuntu 12.04 LTS

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)

A flaw was discovered in the Xen subsystem of the Linux kernel when it

provides read-only access to a disk that supports TRIM or SCSI UNMAP to a

guest OS. A privileged user in the guest OS could exploit this flaw to

destroy data on the disk, even though the guest OS should not be able to

write to the disk. (CVE-2013-2140)

Kees Cook discovered flaw in the Human Interface Device (HID) subsystem of

the Linux kernel. A physically proximate attacker could exploit this flaw

to execute arbitrary code or cause a denial of service (heap memory

corruption) via a specially crafted device that provides an invalid Report

ID. (CVE-2013-2888)

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 a flaw in the Human Interface Device (HID) subsystem

of the Linux kerenl when CONFIG_HID_PANTHERLORD is enabled. A physically

proximate attacker could cause a denial of service (heap out-of-bounds

write) via a specially crafted device. (CVE-2013-2892)

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 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 a vulnerability in the Linux Kernel's Human Interface

Device (HID) subsystem's support for N-Trig touch screens. A physically

proximate attacker could exploit this flaw to cause a denial of service

(OOPS) via a specially crafted device. (CVE-2013-2896)

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)

Kees Cook discovered a flaw in the Human Interface Device (HID) subsystem

of the Linux kernel whe CONFIG_HID_PICOLCD is enabled. A physically

proximate attacker could exploit this flaw to cause a denial of service

(OOPS) via a specially crafted device. (CVE-2013-2899)

Alan Chester reported a flaw in the IPv6 Stream Control Transmission

Protocol (SCTP) of the Linux kernel. A remote attacker could exploit this

flaw to obtain sensitive information by sniffing network traffic.

(CVE-2013-4350)

Dmitry Vyukov reported a flaw in the Linux kernel's handling of IPv6 UDP

Fragmentation Offload (UFO) processing. A remote attacker could leverage

this flaw to cause a denial of service (system crash). (CVE-2013-4387)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-57-highbank 3.2.0-57.87

linux-image-3.2.0-57-powerpc64-smp 3.2.0-57.87

linux-image-3.2.0-57-powerpc-smp 3.2.0-57.87

linux-image-3.2.0-57-generic-pae 3.2.0-57.87

linux-image-3.2.0-57-virtual 3.2.0-57.87

linux-image-3.2.0-57-omap 3.2.0-57.87

linux-image-3.2.0-57-generic 3.2.0-57.87

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2013-0343, CVE-2013-2140, CVE-2013-2888, CVE-2013-2889, CVE-2013-2892, CVE-2013-2893, CVE-2013-2895, CVE-2013-2896, CVE-2013-2897, CVE-2013-2899, CVE-2013-4350, CVE-2013-4387

via Ubuntu Security Notices http://www.ubuntu.com/usn/usn-2038-1/