RHEL 5 : rhev-hypervisor (RHSA-2010:0622)

Medium Nessus Plugin ID 79276

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated rhev-hypervisor packages that fix multiple security issues and two bugs are now available.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The rhev-hypervisor 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.

It was found that the libspice component of QEMU-KVM on the host did not validate all pointers provided from a guest system's QXL graphics card driver. A privileged guest user could use this flaw to cause the host to dereference an invalid pointer, causing the guest to crash (denial of service) or, possibly, resulting in the privileged guest user escalating their privileges on the host. (CVE-2010-0428)

It was found that the libspice component of QEMU-KVM on the host could be forced to perform certain memory management operations on memory addresses controlled by a guest. A privileged guest user could use this flaw to crash the guest (denial of service) or, possibly, escalate their privileges on the host. (CVE-2010-0429)

It was found that QEMU-KVM on the host did not validate all pointers provided from a guest system's QXL graphics card driver. A privileged guest user could use this flaw to cause the host to dereference an invalid pointer, causing the guest to crash (denial of service) or, possibly, resulting in the privileged guest user escalating their privileges on the host. (CVE-2010-0431)

A flaw was found in QEMU-KVM, allowing the guest some control over the index used to access the callback array during sub-page MMIO initialization. A privileged guest user could use this flaw to crash the guest (denial of service) or, possibly, escalate their privileges on the host. (CVE-2010-2784)

A NULL pointer dereference flaw was found when Red Hat Enterprise Virtualization Hypervisor was run on a system that has a processor with the Intel VT-x extension enabled. A privileged guest user could use this flaw to trick the host into emulating a certain instruction, which could crash the host (denial of service). (CVE-2010-0435)

A flaw was found in the way VDSM accepted SSL connections. An attacker could trigger this flaw by creating a crafted SSL connection to VDSM, preventing VDSM from accepting SSL connections from other users.
(CVE-2010-2811)

These updated packages provide updated components that include fixes for security issues; however, these issues have no security impact for Red Hat Enterprise Virtualization Hypervisor. These fixes are for avahi issues CVE-2009-0758 and CVE-2010-2244; freetype issues CVE-2010-1797, CVE-2010-2498, CVE-2010-2499, CVE-2010-2500, CVE-2010-2519, CVE-2010-2527, and CVE-2010-2541; kernel issues CVE-2010-1084, CVE-2010-2066, CVE-2010-2070, CVE-2010-2226, CVE-2010-2248, CVE-2010-2521, and CVE-2010-2524; and openldap issues CVE-2010-0211 and CVE-2010-0212.

These updated rhev-hypervisor packages also fix two bugs.
Documentation for these bug fixes will be available shortly from http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization_fo r_Servers /2.2/html/Technical_Notes/index.html

As Red Hat Enterprise Virtualization Hypervisor is based on KVM, the bug fixes from the KVM update RHSA-2010:0627 have been included in this update. Also included are the bug fixes from the VDSM update RHSA-2010:0628.

KVM: https://rhn.redhat.com/errata/RHSA-2010-0627.html VDSM:
https://rhn.redhat.com/errata/RHSA-2010-0628.html

Users of Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to these updated rhev-hypervisor packages, which resolve these issues.

Solution

Update the affected rhev-hypervisor and / or rhev-hypervisor-pxe packages.

See Also

https://access.redhat.com/security/cve/cve-2010-0428

https://access.redhat.com/security/cve/cve-2010-0429

https://access.redhat.com/security/cve/cve-2010-0431

https://access.redhat.com/security/cve/cve-2010-0435

https://access.redhat.com/security/cve/cve-2010-2784

https://access.redhat.com/security/cve/cve-2010-2811

http://www.nessus.org/u?cb2e5a4a

https://access.redhat.com/errata/RHSA-2010:0622

Plugin Details

Severity: Medium

ID: 79276

File Name: redhat-RHSA-2010-0622.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2014/11/17

Updated: 2018/12/20

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.6

Temporal Score: 4.9

Vector: CVSS2#AV:L/AC:M/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor, p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor-pxe, cpe:/o:redhat:enterprise_linux:5

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2010/08/19

Reference Information

CVE: CVE-2010-0428, CVE-2010-0429, CVE-2010-0431, CVE-2010-0435, CVE-2010-2784, CVE-2010-2811

BID: 42580

RHSA: 2010:0622