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Ubuntu 12.04 LTS USN-2109-1 Severe: Kernel Memory Exploits

ubuntu
Calendar Grey February 18, 2014
Scroller Ubuntu
Numerous flaws in the Linux kernel have been addressed in the recent security patch for Ubuntu, enhancing its overall protection.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Vasily Kulikov reported a flaw in the Linux kernel's implementation of

ptrace. An unprivileged local user could exploit this flaw to obtain

sensitive information from kernel memory. (CVE-2013-2929)

Stephan Mueller reported an error in the Linux kernel's ansi cprng random

number generator. This flaw makes it easier for a local attacker to break

cryptographic protections. (CVE-2013-4345)

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)

Nico Golde...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue memory corruption kernel ubuntu sensitive information

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-59-generic    3.2.0-59.90
  linux-image-3.2.0-59-generic-pae  3.2.0-59.90
  linux-image-3.2.0-59-highbank   3.2.0-59.90
  linux-image-3.2.0-59-omap       3.2.0-59.90
  linux-image-3.2.0-59-powerpc-smp  3.2.0-59.90
  linux-image-3.2.0-59-powerpc64-smp  3.2.0-59.90
  linux-image-3.2.0-59-virtual    3.2.0-59.90

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-2109-1

CVE-2013-2929, CVE-2013-4345, CVE-2013-4587, CVE-2013-6367,

CVE-2013-6380, 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

Severity
critical
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Low
Medium
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Critical

February 18, 2014

Topics%20covered

Topics Covered

security advisory denial of service security issue memory corruption kernel ubuntu sensitive information

Package Information

https://launchpad.net/ubuntu/+source/linux/3.2.0-59.90

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