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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1747 libvirt vulnerability and update 13 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libvirt Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-3639 CVE-2018-1064 Reference: ASB-2018.0121 ESB-2018.1613 ESB-2018.0756 ESB-2018.0754 Original Bulletin: http://www.ubuntu.com/usn/usn-3680-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3680-1 June 12, 2018 libvirt vulnerability and update ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Side channel execution mitigations were added to libvirt. Software Description: - - libvirt: Libvirt virtualization toolkit Details: 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 libvirt to expose new CPU features added by microcode updates to guests. (CVE-2018-3639) Daniel P. Berrange discovered that libvirt incorrectly handled the QEMU guest agent. An attacker could possibly use this issue to consume resources, leading to a denial of service. (CVE-2018-1064) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: libvirt-bin 4.0.0-1ubuntu8.2 libvirt0 4.0.0-1ubuntu8.2 Ubuntu 17.10: libvirt-bin 3.6.0-1ubuntu6.8 libvirt0 3.6.0-1ubuntu6.8 Ubuntu 16.04 LTS: libvirt-bin 1.3.1-1ubuntu10.24 libvirt0 1.3.1-1ubuntu10.24 Ubuntu 14.04 LTS: libvirt-bin 1.2.2-0ubuntu13.1.27 libvirt0 1.2.2-0ubuntu13.1.27 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3680-1 CVE-2018-1064, CVE-2018-3639 Package Information: https://launchpad.net/ubuntu/+source/libvirt/4.0.0-1ubuntu8.2 https://launchpad.net/ubuntu/+source/libvirt/3.6.0-1ubuntu6.8 https://launchpad.net/ubuntu/+source/libvirt/1.3.1-1ubuntu10.24 https://launchpad.net/ubuntu/+source/libvirt/1.2.2-0ubuntu13.1.27 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWyCHCWaOgq3Tt24GAQiGhA/+NtZ0qFTbXplrcFW4QnS9ICK5SM9us3uE WMvx06llncsrrjVwmesWqEBNPp+9LRHTR4LyG3l4Ah9tt5z020hJ2kzxKXaLNFx1 O0Q2ZaJVy3a+L6fphVdpQHKvXGe67P14a8wqMMe6rhsJRumnd339ixMGEZs0KaC9 696bQPno2v9ZGwRvGC8xCW7W0wW2FbH3hzpoz+PnxDMqU/HEtPO3lSJoIIKTIOU6 OD70LBl0uyV/5pySG0vZ7NHRY36CCii+cUoj26lS5eA+UtcdwU09ysJp8yewaqIZ 5qwQ1bVq+CX/hJpkbre6RBPN7t3Ky5vyiwOIJ46+HNGYFhqr8wZhAzIUciRRGTCo MQVJWcy7QiRex3sXe3NAfwuPxx6+Is4iDk7qQ14VnrVXcP/usUpUw4vUa3Ia7k3W rp/E7aNLZ7DLI6PcCQgbwMmpnOhwrzNctnrJ7o76yJTdDCMwRlN4SI5D/qBg/rAr zbUDm8rm76bX+10hwfjLjxrGr2Ev+ZnhscadH8jZ4/L+5OVVhBCX1nvRozzr6TAs TZA8IObw8Y7Trn1pr0HgwFzF3DYohCXCZBTzfLrLNYvr045wQygBybCO0KCaEGVh 8bTFPr2PiAZj/3Xzy4FRRDH384wwQluFAUsJqOIWbDl2AT/lgmjekpcoi3AbDMfO IoNJ1PmtNlE= =zcIt -----END PGP SIGNATURE-----