Advisory Published

USN-3679-1: QEMU update

First published: Tue Jun 12 2018(Updated: )

Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update allows QEMU to expose new CPU features added by AMD microcode updates to guests on amd64 and i386.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/qemu<1:2.11+dfsg-1ubuntu7.3
1:2.11+dfsg-1ubuntu7.3
=18.04
All of
ubuntu/qemu-system<1:2.11+dfsg-1ubuntu7.3
1:2.11+dfsg-1ubuntu7.3
=18.04
All of
ubuntu/qemu-system-x86<1:2.11+dfsg-1ubuntu7.3
1:2.11+dfsg-1ubuntu7.3
=18.04
All of
ubuntu/qemu<1:2.10+dfsg-0ubuntu3.8
1:2.10+dfsg-0ubuntu3.8
=17.10
All of
ubuntu/qemu-system<1:2.10+dfsg-0ubuntu3.8
1:2.10+dfsg-0ubuntu3.8
=17.10
All of
ubuntu/qemu-system-x86<1:2.10+dfsg-0ubuntu3.8
1:2.10+dfsg-0ubuntu3.8
=17.10
All of
ubuntu/qemu<1:2.5+dfsg-5ubuntu10.30
1:2.5+dfsg-5ubuntu10.30
=16.04
All of
ubuntu/qemu-system<1:2.5+dfsg-5ubuntu10.30
1:2.5+dfsg-5ubuntu10.30
=16.04
All of
ubuntu/qemu-system-x86<1:2.5+dfsg-5ubuntu10.30
1:2.5+dfsg-5ubuntu10.30
=16.04
All of
ubuntu/qemu<2.0.0+dfsg-2ubuntu1.43
2.0.0+dfsg-2ubuntu1.43
=14.04
All of
ubuntu/qemu-system<2.0.0+dfsg-2ubuntu1.43
2.0.0+dfsg-2ubuntu1.43
=14.04
All of
ubuntu/qemu-system-x86<2.0.0+dfsg-2ubuntu1.43
2.0.0+dfsg-2ubuntu1.43
=14.04

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability addressed in USN-3679-1?

    The vulnerability addressed in USN-3679-1 is CVE-2018-3639, which allows for unauthorized memory reads via sidechannel attacks in microprocessors utilizing speculative execution of a memory read.

  • How does the vulnerability in USN-3679-1 affect the guest?

    An attacker in the guest could use the vulnerability in USN-3679-1 to expose sensitive guest information, including kernel memory.

  • Which versions of QEMU are affected by USN-3679-1?

    USN-3679-1 affects QEMU versions 1:2.11+dfsg-1ubuntu7.3, 1:2.10+dfsg-0ubuntu3.8, 1:2.5+dfsg-5ubuntu10.30, and 2.0.0+dfsg-2ubuntu1.43.

  • How can I fix the vulnerability in USN-3679-1?

    To fix the vulnerability in USN-3679-1, update QEMU to version 1:2.11+dfsg-1ubuntu7.3, 1:2.10+dfsg-0ubuntu3.8, 1:2.5+dfsg-5ubuntu10.30, or 2.0.0+dfsg-2ubuntu1.43, depending on the affected version.

  • Where can I find more information about USN-3679-1?

    More information about USN-3679-1 can be found at the following references: [CVE-2018-3639](https://ubuntu.com/security/CVE-2018-3639), [USN-3653-1](https://ubuntu.com/security/notices/USN-3653-1), [USN-3655-1](https://ubuntu.com/security/notices/USN-3655-1).

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203