Synopsis
The remote Red Hat host is missing one or more security updates for rhev-hypervisor6.
Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0422 advisory.
The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.
Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions.
A flaw was found in the way the Linux kernel's KVM hypervisor implementation emulated the syscall instruction for 32-bit guests. An unprivileged guest user could trigger this flaw to crash the guest.
(CVE-2012-0045)
A divide-by-zero flaw was found in the Linux kernel's igmp_heard_query() function. An attacker able to send certain IGMP (Internet Group Management Protocol) packets to a target system could use this flaw to cause a denial of service. (CVE-2012-0207)
Red Hat would like to thank Stephan Brwolf for reporting CVE-2012-0045, and Simon McVittie for reporting CVE-2012-0207.
This updated package provides updated components that include fixes for various security issues. These issues have no security impact on Red Hat Enterprise Virtualization Hypervisor itself, however. The security fixes included in this update address the following CVE numbers:
CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4347, CVE-2011-4594, CVE-2011-4611, CVE-2011-4622 and CVE-2012-0038 (kernel issues)
CVE-2012-0444 (libvorbis issue)
CVE-2012-0841 (libxml2 issue)
This update also fixes the following bug:
* The rhev-hypervisor5 and rhev-hypervisor6 packages sometimes updated the symbolic links in the /usr/share/rhev-hypervisor/ directory with incorrect targets. The packages have been updated, they now always update the symbolic links with the correct targets. (BZ#784706)
Users of Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package, which fixes these issues.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL rhev-hypervisor6 package based on the guidance in RHSA-2012:0422.
Plugin Details
File Name: redhat-RHSA-2012-0422.nasl
Agent: unix
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
Vendor
Vendor Severity: Moderate
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor6, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor6-tools
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: Exploits are available
Patch Publication Date: 3/26/2012
Vulnerability Publication Date: 5/17/2012
Exploitable With
Core Impact