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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2322 QEMU vulnerabilities 14 September 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu-system Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-12809 CVE-2017-11434 CVE-2017-10911 CVE-2017-10806 CVE-2017-10664 CVE-2017-9524 CVE-2017-9503 CVE-2017-9375 CVE-2017-9374 CVE-2017-9373 CVE-2017-9330 CVE-2017-9310 CVE-2017-9060 CVE-2017-8380 CVE-2017-8112 CVE-2017-7493 Reference: ESB-2017.1941 ESB-2017.1882 ESB-2017.1827 ESB-2017.1706 Original Bulletin: http://www.ubuntu.com/usn/usn-3414-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3414-1: QEMU vulnerabilities Ubuntu Security Notice USN-3414-1 13th September, 2017 qemu vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Several security issues were fixed in QEMU. Software description qemu - Machine emulator and virtualizer Details Leo Gaspard discovered that QEMU incorrectly handled VirtFS access control. A guest attacker could use this issue to elevate privileges inside the guest. (CVE-2017-7493) Li Qiang discovered that QEMU incorrectly handled VMWare PVSCSI emulation. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources or crash, resulting in a denial of service. (CVE-2017-8112) It was discovered that QEMU incorrectly handled MegaRAID SAS 8708EM2 Host Bus Adapter emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly to obtain sensitive host memory. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.04. (CVE-2017-8380) Li Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to consume resources and crash, resulting in a denial of service. This issue only affected Ubuntu 17.04. (CVE-2017-9060) Li Qiang discovered that QEMU incorrectly handled the e1000e device. A privileged attacker inside the guest could use this issue to cause QEMU to hang, resulting in a denial of service. This issue only affected Ubuntu 17.04. (CVE-2017-9310) Li Qiang discovered that QEMU incorrectly handled USB OHCI emulation support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-9330) Li Qiang discovered that QEMU incorrectly handled IDE AHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources and crash, resulting in a denial of service. (CVE-2017-9373) Li Qiang discovered that QEMU incorrectly handled USB EHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources and crash, resulting in a denial of service. (CVE-2017-9374) Li Qiang discovered that QEMU incorrectly handled USB xHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to hang, resulting in a denial of service. (CVE-2017-9375) Zhangyanyu discovered that QEMU incorrectly handled MegaRAID SAS 8708EM2 Host Bus Adapter emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-9503) It was discovered that the QEMU qemu-nbd server incorrectly handled initialization. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. (CVE-2017-9524) It was discovered that the QEMU qemu-nbd server incorrectly handled signals. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. (CVE-2017-10664) Li Qiang discovered that the QEMU USB redirector incorrectly handled logging debug messages. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-10806) Anthony Perard discovered that QEMU incorrectly handled Xen block-interface responses. An attacker inside the guest could use this issue to cause QEMU to leak contents of host memory. (CVE-2017-10911) Reno Robert discovered that QEMU incorrectly handled certain DHCP options strings. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-11434) Ryan Salsamendi discovered that QEMU incorrectly handled empty CDROM device drives. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.04. (CVE-2017-12809) Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.04: qemu-system-misc 1:2.8+dfsg-3ubuntu2.4 qemu-system-s390x 1:2.8+dfsg-3ubuntu2.4 qemu-system 1:2.8+dfsg-3ubuntu2.4 qemu-system-aarch64 1:2.8+dfsg-3ubuntu2.4 qemu-system-x86 1:2.8+dfsg-3ubuntu2.4 qemu-system-sparc 1:2.8+dfsg-3ubuntu2.4 qemu-system-arm 1:2.8+dfsg-3ubuntu2.4 qemu-system-ppc 1:2.8+dfsg-3ubuntu2.4 qemu-system-mips 1:2.8+dfsg-3ubuntu2.4 Ubuntu 16.04 LTS: qemu-system-misc 1:2.5+dfsg-5ubuntu10.15 qemu-system-s390x 1:2.5+dfsg-5ubuntu10.15 qemu-system 1:2.5+dfsg-5ubuntu10.15 qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.15 qemu-system-x86 1:2.5+dfsg-5ubuntu10.15 qemu-system-sparc 1:2.5+dfsg-5ubuntu10.15 qemu-system-arm 1:2.5+dfsg-5ubuntu10.15 qemu-system-ppc 1:2.5+dfsg-5ubuntu10.15 qemu-system-mips 1:2.5+dfsg-5ubuntu10.15 Ubuntu 14.04 LTS: qemu-system-misc 2.0.0+dfsg-2ubuntu1.35 qemu-system 2.0.0+dfsg-2ubuntu1.35 qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.35 qemu-system-x86 2.0.0+dfsg-2ubuntu1.35 qemu-system-sparc 2.0.0+dfsg-2ubuntu1.35 qemu-system-arm 2.0.0+dfsg-2ubuntu1.35 qemu-system-ppc 2.0.0+dfsg-2ubuntu1.35 qemu-system-mips 2.0.0+dfsg-2ubuntu1.35 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 CVE-2017-10664, CVE-2017-10806, CVE-2017-10911, CVE-2017-11434, CVE-2017-12809, CVE-2017-7493, CVE-2017-8112, CVE-2017-8380, CVE-2017-9060, CVE-2017-9310, CVE-2017-9330, CVE-2017-9373, CVE-2017-9374, CVE-2017-9375, CVE-2017-9503, CVE-2017-9524 - --------------------------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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWbnKdox+lLeg9Ub1AQh05w/+N5jziqvsqDTRBLB4oty2QfruPeztV/5A eh3yA1PyCZm6okY9WbbVay+380v5rcHeAn1amv6mg4gHRq6mHdorz4pSg/FTgw2C GZwERGWKT2dnUoTzYWFQu89wlIcvLe0b2qYp8dwWI6jMyiU10JwRAX257RoGxYLb 3UYD6jVVO2pjCTOilLZKVgmSHwL1eD6j+wIlQcxvARvJ9fZXBFdoC7pgLnvI0rhm 7KNgmgMk5+TmtmrBiMqc6oVLYYem4bmEk1hQdnTaBTiGDDKr7rtGcaOAvdjjRdGu i/pZaUJX7zyFETmIx2uNHazhahOcDA2XX0EwZcjgfhzezbIpgiEQwhHGAiztsj+0 BytBUuC5FflxOLEW4ifU/JEy7wLlvc/l4bPZiCM+fNxU+AheK7tmmNJic0pOPz7t lKoAbXUbar9qBI/8i8qjmd8RPFZy58iIsINBcnNP/QbFmN1Qu71AjHS28mo7nu7v qb5aYKA+/8wel0ontQFfaMhEnwrRQErnuiuz2UtMMSOlhPsAHpw6nXDDVkQOicBz 7BGbFhp8RT4dZugGbkX3u9mjV5Y0uNfXU5npht6nNyWkUyq9KbWpVxZ3xO95wXcD d4CnHBH/YXUkXT2xrVmcih27WEzee1/jtKl7pXxGgkoWBlL+/WtQ5nxmlC4YWTuJ Dynul/wgalk= =WV9+ -----END PGP SIGNATURE-----