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Ubuntu 12.04 LTS USN-2135-1 Critical: Kernel Information Leak and DoS

ubuntu
Calendar Grey March 7, 2014
Scroller Ubuntu
Severe flaws in the Ubuntu 12.04 LTS kernel necessitate prompt patches to defend against a range of attacks.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-quantal: Linux hardware enablement kernel from Quantal

Details:

Mathy Vanhoef discovered an error in the the way the ath9k driver was

handling the BSSID masking. A remote attacker could exploit this error to

discover the original MAC address after a spoofing atack. (CVE-2013-4579)

Andrew Honig reported a flaw in the Linux Kernel's kvm_vm_ioctl_create_vcpu

function of the Kernel Virtual Machine (KVM) subsystem. A local user could

exploit this flaw to gain privileges on the host machine. (CVE-2013-4587)

Andrew Honig reported a flaw in the apic_get_tmcct function of the Kernel

Virtual Machine (KVM) subsystem if the Linux kernel. A guest OS user could

exploit this flaw to cause a denial of service or host OS system crash.

(CVE-2013-6367)

Andrew Honig reported an error in the Linux Kernel's Kernel Virtual Machine

(KVM) VAPIC synchronization operation. A local user could exploi...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak critical Ubuntu kernel buffer underflow

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.5.0-47-generic    3.5.0-47.71~precise1

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

https://ubuntu.com/security/notices/USN-2135-1

CVE-2013-4579, CVE-2013-4587, CVE-2013-6367, CVE-2013-6368,

CVE-2013-6382, CVE-2013-7263, CVE-2013-7264, CVE-2013-7265,

CVE-2013-7266, CVE-2013-7267, CVE-2013-7268, CVE-2013-7269,

CVE-2013-7270, CVE-2013-7271, CVE-2013-7281, CVE-2014-1438,

CVE-2014-1446, CVE-2014-1874

Severity
critical
Lowest
Low
Medium
High
Critical

March 07, 2014

Topics%20covered

Topics Covered

security advisory denial of service information leak critical Ubuntu kernel buffer underflow

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-47.71~precise1

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