Executive Summary

Summary
Title qemu-kvm-rhev security update
Informations
Name RHSA-2015:0891 First vendor Publication 2015-04-28
Vendor RedHat Last vendor Modification 2015-04-28
Severity (Vendor) Important Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated qemu-kvm-rhev packages that fix one security issue are now available for Red Hat Enterprise Linux OpenStack Platform 4.0 and 5.0 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux OpenStack Platform 4.0 - x86_64 Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6 - 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, in environments managed by Red Hat Enterprise Linux OpenStack Platform.

It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM-allocated buffer boundaries in the host's QEMU process address space with attacker-provided data. (CVE-2014-8106)

This issue was found by Paolo Bonzini of Red Hat.

All users of qemu-kvm-rhev 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.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1169454 - CVE-2014-8106 qemu: cirrus: insufficient blit region checks

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2015-0891.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:27930
 
Oval ID: oval:org.mitre.oval:def:27930
Title: DSA-3087-1 -- qemu security update
Description: Paolo Bonzini of Red Hat discovered that the blit region checks were insufficient in the Cirrus VGA emulator in qemu, a fast processor emulator. A privileged guest user could use this flaw to write into qemu address space on the host, potentially escalating their privileges to those of the qemu host process.
Family: unix Class: patch
Reference(s): DSA-3087-1
CVE-2014-8106
Version: 3
Platform(s): Debian GNU/Linux 7.0
Debian GNU/kFreeBSD 7.0
Product(s): qemu
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28240
 
Oval ID: oval:org.mitre.oval:def:28240
Title: DSA-3088-1 -- qemu-kvm security update
Description: Paolo Bonzini of Red Hat discovered that the blit region checks were insufficient in the Cirrus VGA emulator in qemu-kvm, a full virtualization solution on x86 hardware. A privileged guest user could use this flaw to write into qemu address space on the host, potentially escalating their privileges to those of the qemu host process.
Family: unix Class: patch
Reference(s): DSA-3088-1
CVE-2014-8106
Version: 3
Platform(s): Debian GNU/Linux 7.0
Debian GNU/kFreeBSD 7.0
Product(s): qemu-kvm
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28497
 
Oval ID: oval:org.mitre.oval:def:28497
Title: USN-2439-1 -- QEMU vulnerabilities
Description: Michael S. Tsirkin discovered that QEMU incorrectly handled certain parameters during ram load while performing a migration. An attacker able to manipulate savevm data could use this issue to possibly execute arbitrary code on the host. This issue only affected Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, and Ubuntu 14.10. (<a href="http://people.ubuntu.com/~ubuntu-security/cve/CVE-2014-7840">CVE-2014-7840</a>) Paolo Bonzini discovered that QEMU incorrectly handled memory in the Cirrus VGA device. A malicious guest could possibly use this issue to write into memory of the host, leading to privilege escalation. (<a href="http://people.ubuntu.com/~ubuntu-security/cve/CVE-2014-8106">CVE-2014-8106</a>)
Family: unix Class: patch
Reference(s): USN-2439-1
CVE-2014-7840
CVE-2014-8106
Version: 3
Platform(s): Ubuntu 14.10
Ubuntu 14.04
Ubuntu 12.04
Ubuntu 10.04
Product(s): qemu
qemu-kvm
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 133

Nessus® Vulnerability Scanner

Date Description
2017-05-04 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0096.nasl - Type : ACT_GATHER_INFO
2017-05-04 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0095.nasl - Type : ACT_GATHER_INFO
2017-03-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0718-1.nasl - Type : ACT_GATHER_INFO
2017-03-10 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0647-1.nasl - Type : ACT_GATHER_INFO
2017-03-01 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0582-1.nasl - Type : ACT_GATHER_INFO
2016-02-17 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL63519101.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0349-1.nasl - Type : ACT_GATHER_INFO
2015-04-30 Name : The remote host is missing a vendor-supplied security patch.
File : citrix_xenserver_CTX200892.nasl - Type : ACT_GATHER_INFO
2015-04-24 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0868.nasl - Type : ACT_GATHER_INFO
2015-04-23 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0867.nasl - Type : ACT_GATHER_INFO
2015-04-22 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20150421_qemu_kvm_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2015-04-22 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0867.nasl - Type : ACT_GATHER_INFO
2015-04-22 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0867.nasl - Type : ACT_GATHER_INFO
2015-04-14 Name : The remote Fedora host is missing a security update.
File : fedora_2015-5482.nasl - Type : ACT_GATHER_INFO
2015-03-26 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20150305_qemu_kvm_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2015-03-19 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-061.nasl - Type : ACT_GATHER_INFO
2015-03-18 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0349.nasl - Type : ACT_GATHER_INFO
2015-03-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0349.nasl - Type : ACT_GATHER_INFO
2015-03-06 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0624.nasl - Type : ACT_GATHER_INFO
2015-03-05 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0349.nasl - Type : ACT_GATHER_INFO
2015-02-24 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_kvm-libvirt-201412-150124.nasl - Type : ACT_GATHER_INFO
2015-02-24 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_kvm-libvirt-201412-150123.nasl - Type : ACT_GATHER_INFO
2015-02-18 Name : The remote Fedora host is missing a security update.
File : fedora_2015-1886.nasl - Type : ACT_GATHER_INFO
2014-12-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201412-37.nasl - Type : ACT_GATHER_INFO
2014-12-15 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2439-1.nasl - Type : ACT_GATHER_INFO
2014-12-15 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2014-249.nasl - Type : ACT_GATHER_INFO
2014-12-05 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3087.nasl - Type : ACT_GATHER_INFO
2014-12-05 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3088.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2016-01-20 21:26:05
  • Multiple Updates
2015-04-28 09:26:36
  • First insertion