The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0068 for details.

Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

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.

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.

A flaw was found in the way QEMU's AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-3209)

Red Hat would like to thank Matt Tait of Google's Project Zero security team 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.

Xen was updated to fix seven security vulnerabilities :

CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu. (XSA-128, bnc#931625)

CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests.
(XSA-129, bnc#931626)

CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages. (XSA-130, bnc#931627)

CVE-2015-4106: Unmediated PCI register access in qemu. (XSA-131, bnc#931628)

CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior.
(XSA-134, bnc#932790)

CVE-2015-3209: Heap overflow in qemu pcnet controller allowing guest to host escape. (XSA-135, bnc#932770)

CVE-2015-4164: DoS through iret hypercall handler. (XSA-136, bnc#932996)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Xen was updated to fix six security issues :

CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu. (XSA-128, bsc#931625)

CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests.
(XSA-129, bsc#931626)

CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages. (XSA-130, bsc#931627)

CVE-2015-4106: Unmediated PCI register access in qemu. (XSA-131, bsc#931628)

CVE-2015-3209: Heap overflow in qemu pcnet controller allowing guest to host escape. (XSA-135, bsc#932770)

CVE-2015-4164: DoS through iret hypercall handler. (XSA-136, bsc#932996)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- Rebased to version 2.4.0 * Support for virtio-gpu, 2D     only * Support for virtio-based keyboard/mouse/tablet     emulation * x86 support for memory hot-unplug

  - ACPI v5.1 table support for 'virt' board *     CVE-2015-3209: pcnet: multi-tmd buffer overflow in the     tx path (bz #1230536) * CVE-2015-3214: i8254: out-of-     bounds memory access (bz #1243728) * CVE-2015-5158: scsi     stack-based buffer overflow (bz #1246025) *     CVE-2015-5154: ide: atapi: heap overflow during I/O     buffer memory access (bz #1247141) * CVE-2015-5165:
    rtl8139 uninitialized heap memory information leakage to     guest (bz #1249755) * CVE-2015-5166: BlockBackend object     use after free issue (bz #1249758) * CVE-2015-5745:
    buffer overflow in virtio- serial (bz #1251160)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

kvm was updated to fix two security issues.

The following vulnerabilities were fixed :

  - CVE-2015-5154: Host code execution via IDE subsystem     CD-ROM (bsc#938344).

  - CVE-2015-3209: Fix buffer overflow in pcnet emulation     (bsc#932770).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
84140	OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom)	Nessus	OracleVM Local Security Checks	6/12/2015	1/4/2021	low
84092	CentOS 6 : qemu-kvm (CESA-2015:1087)	Nessus	CentOS Local Security Checks	6/11/2015	1/4/2021	high
84190	SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2015:1045-1)	Nessus	SuSE Local Security Checks	6/15/2015	1/6/2021	high
84469	SUSE SLES11 Security Update : Xen (SUSE-SU-2015:1157-1)	Nessus	SuSE Local Security Checks	6/30/2015	1/19/2021	high
85592	Fedora 23 : qemu-2.4.0-1.fc23 (2015-13358)	Nessus	Fedora Local Security Checks	8/24/2015	1/11/2021	medium
85625	SUSE SLES11 Security Update : kvm (SUSE-SU-2015:1426-1)	Nessus	SuSE Local Security Checks	8/25/2015	1/19/2021	high

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