exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-3561-1

Ubuntu Security Notice USN-3561-1
Posted Feb 8, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3561-1 - It was discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update allows libvirt to expose new CPU features added by microcode updates to guests. On amd64 and i386, new CPU models that match the updated microcode features were added with an -IBRS suffix. Certain environments will require guests to be switched manually to the new CPU models after microcode updates have been applied to the host. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2017-5715
SHA-256 | dcecc1c0c320933f560d27edcde2541b800157c29b7c91559c36818fa010ff71

Ubuntu Security Notice USN-3561-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3561-1
February 07, 2018

libvirt update
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Spectre mitigations were added to libvirt.

Software Description:
- libvirt: Libvirt virtualization toolkit

Details:

It was discovered that microprocessors utilizing speculative execution
and branch prediction may allow unauthorized memory reads via sidechannel
attacks. This flaw is known as Spectre. An attacker in the guest could use
this to expose sensitive guest information, including kernel memory.

This update allows libvirt to expose new CPU features added by microcode
updates to guests. On amd64 and i386, new CPU models that match the updated
microcode features were added with an -IBRS suffix. Certain environments
will require guests to be switched manually to the new CPU models after
microcode updates have been applied to the host.

Update instructions:

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

Ubuntu 17.10:
libvirt-bin 3.6.0-1ubuntu6.2
libvirt0 3.6.0-1ubuntu6.2

Ubuntu 16.04 LTS:
libvirt-bin 1.3.1-1ubuntu10.17
libvirt0 1.3.1-1ubuntu10.17

Ubuntu 14.04 LTS:
libvirt-bin 1.2.2-0ubuntu13.1.25
libvirt0 1.2.2-0ubuntu13.1.25

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

References:
https://www.ubuntu.com/usn/usn-3561-1
CVE-2017-5715

Package Information:
https://launchpad.net/ubuntu/+source/libvirt/3.6.0-1ubuntu6.2
https://launchpad.net/ubuntu/+source/libvirt/1.3.1-1ubuntu10.17
https://launchpad.net/ubuntu/+source/libvirt/1.2.2-0ubuntu13.1.25


Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close