Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3670 [USN-3826-1] QEMU vulnerabilities 27 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-19364 CVE-2018-18954 CVE-2018-18849 CVE-2018-17963 CVE-2018-17962 CVE-2018-17958 CVE-2018-16847 CVE-2018-12617 CVE-2018-11806 CVE-2018-10839 Reference: ESB-2018.3660 ESB-2018.3533 ESB-2018.2969 ESB-2018.2402 Original Bulletin: http://www.ubuntu.com/usn/usn-3826-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3826-1: QEMU vulnerabilities 26 November 2018 qemu vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS o Ubuntu 14.04 LTS Summary Several security issues were fixed in QEMU. Software Description o qemu - Machine emulator and virtualizer Details Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled NE2000 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-10839) It was discovered that QEMU incorrectly handled the Slirp networking back-end. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-11806) Fakhri Zulkifli discovered that the QEMU guest agent incorrectly handled certain QMP commands. An attacker could possibly use this issue to crash the QEMU guest agent, resulting in a denial of service. (CVE-2018-12617) Li Qiang discovered that QEMU incorrectly handled NVM Express Controller emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16847) Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled RTL8139 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17958) Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled PCNET device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17962) Daniel Shapira discovered that QEMU incorrectly handled large packet sizes. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17963) It was discovered that QEMU incorrectly handled LSI53C895A device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-18849) Moguofang discovered that QEMU incorrectly handled the IPowerNV LPC controller. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-18954) Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-19364) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 qemu-system - 1:2.12+dfsg-3ubuntu8.1 qemu-system-arm - 1:2.12+dfsg-3ubuntu8.1 qemu-system-mips - 1:2.12+dfsg-3ubuntu8.1 qemu-system-misc - 1:2.12+dfsg-3ubuntu8.1 qemu-system-ppc - 1:2.12+dfsg-3ubuntu8.1 qemu-system-s390x - 1:2.12+dfsg-3ubuntu8.1 qemu-system-sparc - 1:2.12+dfsg-3ubuntu8.1 qemu-system-x86 - 1:2.12+dfsg-3ubuntu8.1 Ubuntu 18.04 LTS qemu-system - 1:2.11+dfsg-1ubuntu7.8 qemu-system-arm - 1:2.11+dfsg-1ubuntu7.8 qemu-system-mips - 1:2.11+dfsg-1ubuntu7.8 qemu-system-misc - 1:2.11+dfsg-1ubuntu7.8 qemu-system-ppc - 1:2.11+dfsg-1ubuntu7.8 qemu-system-s390x - 1:2.11+dfsg-1ubuntu7.8 qemu-system-sparc - 1:2.11+dfsg-1ubuntu7.8 qemu-system-x86 - 1:2.11+dfsg-1ubuntu7.8 Ubuntu 16.04 LTS qemu-system - 1:2.5+dfsg-5ubuntu10.33 qemu-system-aarch64 - 1:2.5+dfsg-5ubuntu10.33 qemu-system-arm - 1:2.5+dfsg-5ubuntu10.33 qemu-system-mips - 1:2.5+dfsg-5ubuntu10.33 qemu-system-misc - 1:2.5+dfsg-5ubuntu10.33 qemu-system-ppc - 1:2.5+dfsg-5ubuntu10.33 qemu-system-s390x - 1:2.5+dfsg-5ubuntu10.33 qemu-system-sparc - 1:2.5+dfsg-5ubuntu10.33 qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.33 Ubuntu 14.04 LTS qemu-system - 2.0.0+dfsg-2ubuntu1.44 qemu-system-aarch64 - 2.0.0+dfsg-2ubuntu1.44 qemu-system-arm - 2.0.0+dfsg-2ubuntu1.44 qemu-system-mips - 2.0.0+dfsg-2ubuntu1.44 qemu-system-misc - 2.0.0+dfsg-2ubuntu1.44 qemu-system-ppc - 2.0.0+dfsg-2ubuntu1.44 qemu-system-sparc - 2.0.0+dfsg-2ubuntu1.44 qemu-system-x86 - 2.0.0+dfsg-2ubuntu1.44 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes. References o CVE-2018-10839 o CVE-2018-11806 o CVE-2018-12617 o CVE-2018-16847 o CVE-2018-17958 o CVE-2018-17962 o CVE-2018-17963 o CVE-2018-18849 o CVE-2018-18954 o CVE-2018-19364 (C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd. - --------------------------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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 iQIVAwUBW/yWGWaOgq3Tt24GAQgHwRAAgE++HQAQBkO+U7bgmQac75/qhq2jvwB2 EIz7GO/tvqAiajaRHj6QcoNAkWAduLbc3SJtHRjZPPdJNgmlnOWiMQo4jipCUDOW HtvJjTpVh127K9XvgWcfuGpBKaLUkI8+h9DH6/HzdTLjfgY3zhzIHKKRSwnFWIxx N913xRBeLEdnOZ9W0oAnDnmQ6vcoO8Gxc8+B9ujmZ9KGnWki+2LjXt9q2vkAZYqQ kTYsCD+ZjMhN1kjy0bAeE9mgxsKYGK+1KgmGnobXaEgBst1Aeyqtk9+UBBW4QM5D Zsdyd41wO2y9X9/z1buKwvdqlyrdePUkmkPhX6d1zhBIMU1/kBANEZr20uXOp0bp 2WopimeOp5u3/iOFjIZ4h261lWadoNNVNHWkTQS4/gK2zc8qxtH2Rub/ywHz8S6H mVYqQnwljXNZMvWDvESubrr9k2qh0aEU8/jYFCcIjviz+fDI8xh1QvlT26aCiddQ kRd/N0JwwXrHRWYsJJdnTNuajfhGnWoCHsfa3ZMv8S1bkplMf04INu+hnk2s/4CR CJ1zPjWV/V3uXO3FJTvbLq9vXBDBjnMgjMrGx7cFHc/ZlFX69mvzF5sxMPYf+CQI 2Ri9jHxR3V5oyFd99gL2Y3ezF84LTlnB/cYtSdMx3FNTgJV7Kd7pSiIMVcSMP1Dv trA28gyEnRE= =givZ -----END PGP SIGNATURE-----