ID

VAR-201505-0417

CVE

CVE-2015-3456

TITLE

Xen and KVM Used in QEMU Service disruption in floppy disk controllers in Japan (DoS) Vulnerabilities

DESCRIPTION

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM. QEMU is prone to a remote memory-corruption vulnerability because the application fails to perform adequate boundary-checks on user-supplied data. An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts may result in a denial-of-service condition. 6) - i386, x86_64 3. This only affects HVM guests. For the oldstable distribution (wheezy), this problem has been fixed in version 4.1.4-3+deb7u6. The stable distribution (jessie) is already fixed through the qemu update provided as DSA-3259-1. We recommend that you upgrade your xen packages. Relevant releases/architectures: RHEV Agents (vdsm) - x86_64 3. http://creativecommons.org/licenses/by-sa/2.5 . Background ========== VirtualBox is a powerful virtualization product from Oracle. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Note: the current version of the following document is available here: https://h20564.www2.hp.com/portal/site/hpsc/public/kb/ docDisplay?docId=emr_na-c04706564 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c04706564 Version: 1 HPSBMU03349 rev.1- HP Helion CloudSystem, Local Denial of Service (DoS), Arbitrary Code Execution NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2015-06-09 Last Updated: 2015-06-09 Potential Security Impact: Local Denial of Service (DoS), arbitrary code execution Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY A potential security vulnerability has been identified with HP Helion CloudSystem. The vulnerability could be exploited locally resulting in Denial of Service (DoS) or execution of arbitrary code. Notes: This is the vulnerability known as "Virtual Environment Neglected Operations Manipulation" also known as "VENOM". This vulnerability affects all versions of QEMU and could lead to hypervisor breakout, where a user of the guest VM can gain control of the host. HP Helion CloudSystem leverages QEMU as a core part of its virtualization functionality and is therefore affected by this vulnerability. References: CVE-2015-3456 (SSRT102076) SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP Helion CloudSystem software: HP Helion CloudSystem 8.x series Note: Only HP CloudSystem deployment using KVM on RHEL version 6.4 or 6.5 in the control plane or the data plane are affected by this vulnerability BACKGROUND CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2015-3456 (AV:A/AC:L/Au:S/C:C/I:C/A:C) 7.7 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION HP recommends following remediation steps to resolve the vulnerability in HP Helion CloudSystem. The following steps are recommended by Red Hat ( https://access.redhat.com/articles/1444903 ) and must be applied for each control plane and data plane node that is using KVM for virtualization: Login to the node Upgrade the QEMU package for your system using the command: 'yum update qemu-kvm'. A full system update may be applied using the command 'yum update'. Refer to the HP Helion CloudSystem administrative guide ( http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docI d=c04376928 ) for instructions on restarting appliances. HISTORY Version:1 (rev.1) - 9 June 2015 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HP Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hp.com. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com Subscribe: To initiate a subscription to receive future HP Security Bulletin alerts via Email: http://h41183.www4.hp.com/signup_alerts.php?jumpid=hpsc_secbulletins Security Bulletin Archive: A list of recently released Security Bulletins is available here: https://h20564.www2.hp.com/portal/site/hpsc/public/kb/secBullArchive/ Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB. 3C = 3COM 3P = 3rd Party Software GN = HP General Software HF = HP Hardware and Firmware MP = MPE/iX MU = Multi-Platform Software NS = NonStop Servers OV = OpenVMS PI = Printing and Imaging PV = ProCurve ST = Storage Software TU = Tru64 UNIX UX = HP-UX Copyright 2015 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. From: Yury German <blueknight@gentoo.org> To: gentoo-announce@lists.gentoo.org Message-ID: <57035F2D.8090108@gentoo.org> Subject: [ GLSA 201604-03 ] Xen: Multiple vulnerabilities - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201604-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Xen: Multiple vulnerabilities Date: April 05, 2016 Bugs: #445254, #513832, #547202, #549200, #549950, #550658, #553664, #553718, #555532, #556304, #561110, #564472, #564932, #566798, #566838, #566842, #567962, #571552, #571556, #574012 ID: 201604-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Xen, the worst of which cause a Denial of Service. Background ========== Xen is a bare-metal hypervisor. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.6.0-r9 >= 4.6.0-r9 *>= 4.5.2-r5 2 app-emulation/xen-pvgrub < 4.6.0 Vulnerable! 3 app-emulation/xen-tools < 4.6.0-r9 >= 4.6.0-r9 *>= 4.5.2-r5 4 app-emulation/pvgrub >= 4.6.0 *>= 4.5.2 ------------------------------------------------------------------- NOTE: Certain packages are still vulnerable. Users should migrate to another package if one is available or wait for the existing packages to be marked stable by their architecture maintainers. ------------------------------------------------------------------- 4 affected packages Description =========== Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Workaround ========== There is no known workaround at this time. Resolution ========== All Xen 4.5 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.5.2-r5" All Xen 4.6 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.6.0-r9" All Xen tools 4.5 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.5.2-r5" All Xen tools 4.6 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.6.0-r9" All Xen pvgrub users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-pvgrub-4.6.0"= References ========== [ 1 ] CVE-2012-3494 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3494 [ 2 ] CVE-2012-3495 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3495 [ 3 ] CVE-2012-3496 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3496 [ 4 ] CVE-2012-3497 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3497 [ 5 ] CVE-2012-3498 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3498 [ 6 ] CVE-2012-3515 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3515 [ 7 ] CVE-2012-4411 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4411 [ 8 ] CVE-2012-4535 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4535 [ 9 ] CVE-2012-4536 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4536 [ 10 ] CVE-2012-4537 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4537 [ 11 ] CVE-2012-4538 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4538 [ 12 ] CVE-2012-4539 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4539 [ 13 ] CVE-2012-6030 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6030 [ 14 ] CVE-2012-6031 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6031 [ 15 ] CVE-2012-6032 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6032 [ 16 ] CVE-2012-6033 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6033 [ 17 ] CVE-2012-6034 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6034 [ 18 ] CVE-2012-6035 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6035 [ 19 ] CVE-2012-6036 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6036 [ 20 ] CVE-2015-2151 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-2151 [ 21 ] CVE-2015-3209 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3209 [ 22 ] CVE-2015-3259 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3259 [ 23 ] CVE-2015-3340 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3340 [ 24 ] CVE-2015-3456 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3456 [ 25 ] CVE-2015-4103 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4103 [ 26 ] CVE-2015-4104 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4104 [ 27 ] CVE-2015-4105 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4105 [ 28 ] CVE-2015-4106 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4106 [ 29 ] CVE-2015-4163 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4163 [ 30 ] CVE-2015-4164 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-4164 [ 31 ] CVE-2015-5154 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-5154 [ 32 ] CVE-2015-7311 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7311 [ 33 ] CVE-2015-7504 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7504 [ 34 ] CVE-2015-7812 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7812 [ 35 ] CVE-2015-7813 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7813 [ 36 ] CVE-2015-7814 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7814 [ 37 ] CVE-2015-7835 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7835 [ 38 ] CVE-2015-7871 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7871 [ 39 ] CVE-2015-7969 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7969 [ 40 ] CVE-2015-7970 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7970 [ 41 ] CVE-2015-7971 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7971 [ 42 ] CVE-2015-7972 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7972 [ 43 ] CVE-2015-8339 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8339 [ 44 ] CVE-2015-8340 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8340 [ 45 ] CVE-2015-8341 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8341 [ 46 ] CVE-2015-8550 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8550 [ 47 ] CVE-2015-8551 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8551 [ 48 ] CVE-2015-8552 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8552 [ 49 ] CVE-2015-8554 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8554 [ 50 ] CVE-2015-8555 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8555 [ 51 ] CVE-2016-2270 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2270 [ 52 ] CVE-2016-2271 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2271 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201604-03 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2016 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 --roWGDR0oQEDLX1s6lNAQV7ISgI2Pjo8Pc . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2015:0999-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0999.html Issue date: 2015-05-13 CVE Names: CVE-2015-3456 ===================================================================== 1. Summary: Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM. An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. (CVE-2015-3456) Red Hat would like to thank Jason Geffner of CrowdStrike for reporting this issue. All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1218611 - CVE-2015-3456 qemu: fdc: out-of-bounds fifo buffer memory access 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.2.src.rpm x86_64: libcacard-1.5.3-86.el7_1.2.i686.rpm libcacard-1.5.3-86.el7_1.2.x86_64.rpm qemu-img-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: libcacard-devel-1.5.3-86.el7_1.2.i686.rpm libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.2.src.rpm x86_64: libcacard-1.5.3-86.el7_1.2.i686.rpm libcacard-1.5.3-86.el7_1.2.x86_64.rpm libcacard-devel-1.5.3-86.el7_1.2.i686.rpm libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm qemu-img-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.2.src.rpm ppc64: qemu-img-1.5.3-86.el7_1.2.ppc64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc64.rpm x86_64: libcacard-1.5.3-86.el7_1.2.i686.rpm libcacard-1.5.3-86.el7_1.2.x86_64.rpm qemu-img-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: libcacard-1.5.3-86.el7_1.2.ppc.rpm libcacard-1.5.3-86.el7_1.2.ppc64.rpm libcacard-devel-1.5.3-86.el7_1.2.ppc.rpm libcacard-devel-1.5.3-86.el7_1.2.ppc64.rpm libcacard-tools-1.5.3-86.el7_1.2.ppc64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc64.rpm x86_64: libcacard-devel-1.5.3-86.el7_1.2.i686.rpm libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.2.src.rpm x86_64: libcacard-1.5.3-86.el7_1.2.i686.rpm libcacard-1.5.3-86.el7_1.2.x86_64.rpm qemu-img-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: libcacard-devel-1.5.3-86.el7_1.2.i686.rpm libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2015-3456 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVU1swXlSAg2UNWIIRAshIAKCZWkFNWcyvUBOx0PV9ta8YOtLgbgCdFbuw V78Qd9SnhHVz0MTvjdFcFu0= =+Vrr -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ============================================================================ Ubuntu Security Notice USN-2608-1 May 13, 2015 qemu, qemu-kvm vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.04 - Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Several security issues were fixed in QEMU. Software Description: - qemu: Machine emulator and virtualizer - qemu-kvm: Machine emulator and virtualizer Details: Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3456) Daniel P. Berrange discovered that QEMU incorrectly handled VNC websockets. A remote attacker could use this issue to cause QEMU to consume memory, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-1779) Jan Beulich discovered that QEMU, when used with Xen, didn't properly restrict access to PCI command registers. A malicious guest could use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-2756) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.04: qemu-system 1:2.2+dfsg-5expubuntu9.1 qemu-system-aarch64 1:2.2+dfsg-5expubuntu9.1 qemu-system-arm 1:2.2+dfsg-5expubuntu9.1 qemu-system-mips 1:2.2+dfsg-5expubuntu9.1 qemu-system-misc 1:2.2+dfsg-5expubuntu9.1 qemu-system-ppc 1:2.2+dfsg-5expubuntu9.1 qemu-system-sparc 1:2.2+dfsg-5expubuntu9.1 qemu-system-x86 1:2.2+dfsg-5expubuntu9.1 Ubuntu 14.10: qemu-system 2.1+dfsg-4ubuntu6.6 qemu-system-aarch64 2.1+dfsg-4ubuntu6.6 qemu-system-arm 2.1+dfsg-4ubuntu6.6 qemu-system-mips 2.1+dfsg-4ubuntu6.6 qemu-system-misc 2.1+dfsg-4ubuntu6.6 qemu-system-ppc 2.1+dfsg-4ubuntu6.6 qemu-system-sparc 2.1+dfsg-4ubuntu6.6 qemu-system-x86 2.1+dfsg-4ubuntu6.6 Ubuntu 14.04 LTS: qemu-system 2.0.0+dfsg-2ubuntu1.11 qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.11 qemu-system-arm 2.0.0+dfsg-2ubuntu1.11 qemu-system-mips 2.0.0+dfsg-2ubuntu1.11 qemu-system-misc 2.0.0+dfsg-2ubuntu1.11 qemu-system-ppc 2.0.0+dfsg-2ubuntu1.11 qemu-system-sparc 2.0.0+dfsg-2ubuntu1.11 qemu-system-x86 2.0.0+dfsg-2ubuntu1.11 Ubuntu 12.04 LTS: qemu-kvm 1.0+noroms-0ubuntu14.22 After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

network

TYPE

arbitrary

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2024-11-12T21:47:37.492000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE