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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: xen security update Advisory ID: RHSA-2015:1002-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1002.html Issue date: 2015-05-13 CVE Names: CVE-2015-3456 ===================================================================== 1. Summary: Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5. 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: RHEL Desktop Multi OS (v. 5 client) - i386, x86_64 RHEL Virtualization (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux. 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 xen users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, all running fully-virtualized guests must be restarted 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 Desktop (v. 5 client): Source: xen-3.0.3-146.el5_11.src.rpm i386: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.i386.rpm x86_64: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-libs-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.x86_64.rpm RHEL Desktop Multi OS (v. 5 client): Source: xen-3.0.3-146.el5_11.src.rpm i386: xen-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.i386.rpm x86_64: xen-3.0.3-146.el5_11.x86_64.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-devel-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: xen-3.0.3-146.el5_11.src.rpm i386: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.i386.rpm ia64: xen-debuginfo-3.0.3-146.el5_11.ia64.rpm xen-libs-3.0.3-146.el5_11.ia64.rpm x86_64: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-libs-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.x86_64.rpm RHEL Virtualization (v. 5 server): Source: xen-3.0.3-146.el5_11.src.rpm i386: xen-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.i386.rpm ia64: xen-3.0.3-146.el5_11.ia64.rpm xen-debuginfo-3.0.3-146.el5_11.ia64.rpm xen-devel-3.0.3-146.el5_11.ia64.rpm x86_64: xen-3.0.3-146.el5_11.x86_64.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-devel-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.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 iD8DBQFVU1nEXlSAg2UNWIIRAqUxAJ4/PAGie2atGBxiE9sxg6XvYfOdnwCghYMV N+LpzXLkVxe9V4a19FaVRjk= =UhFF -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Relevant releases/architectures: RHEV Agents (vdsm) - 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-rhev package provides the user-space component for running virtual machines using KVM. Once all virtual machines have shut down, start them again for this update to take effect. Background ========== QEMU is a generic and open source machine emulator and virtualizer. http://creativecommons.org/licenses/by-sa/2.5 . 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. Impact ====== A local attacker could possibly cause a Denial of Service condition or obtain sensitive information. 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 . CVE-2015-1779 Daniel P. Berrange discovered a denial of service vulnerability in the VNC web socket decoder. CVE-2015-2756 Jan Beulich discovered that unmediated PCI command register could result in denial of service. CVE-2015-3456 Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code. For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6a+deb7u7 of the qemu source package and in version 1.1.2+dfsg-6+deb7u7 of the qemu-kvm source package. Only CVE-2015-3456 affects oldstable. For the stable distribution (jessie), these problems have been fixed in version 1:2.1+dfsg-12. For the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your qemu packages

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

specific network environment

TYPE

buffer error

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Jason Geffner, CrowdStrike Senior Security Researcher

SOURCES

LAST UPDATE DATE

2024-09-15T19:52:17.263000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE