Executive Summary

Summary
Title qemu-kvm security and bug fix update
Informations
Name RHSA-2016:0083 First vendor Publication 2016-01-28
Vendor RedHat Last vendor Modification 2016-01-28
Severity (Vendor) N/A 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:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated qemu-kvm packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 package provides the user-space component for running virtual machines using KVM.

An out-of-bounds read/write flaw was discovered in the way QEMU's Firmware Configuration device emulation processed certain firmware configurations. A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance or, potentially, execute arbitrary code on the host with privileges of the QEMU process. (CVE-2016-1714)

Red Hat would like to thank Donghai Zhu of Alibaba for reporting this issue.

This update also fixes the following bugs:

* Incorrect handling of the last sector of an image file could trigger an assertion failure in qemu-img. This update changes the handling of the last sector, and no assertion failure occurs. (BZ#1298828)

All qemu-kvm users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 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.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1296060 - CVE-2016-1714 Qemu: nvram: OOB r/w access in processing firmware configurations 1298828 - [abrt] qemu-img: get_block_status(): qemu-img killed by SIGABRT

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2016-0083.html

CWE : Common Weakness Enumeration

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

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 139
Application 1
Os 2

Nessus® Vulnerability Scanner

Date Description
2016-10-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1170.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1785-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1745-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1703-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1698-1.nasl - Type : ACT_GATHER_INFO
2016-07-08 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-839.nasl - Type : ACT_GATHER_INFO
2016-06-17 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1560-1.nasl - Type : ACT_GATHER_INFO
2016-05-31 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL75248350.nasl - Type : ACT_GATHER_INFO
2016-05-25 Name : The remote OracleVM host is missing a security update.
File : oraclevm_OVMSA-2016-0051.nasl - Type : ACT_GATHER_INFO
2016-05-19 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1318-1.nasl - Type : ACT_GATHER_INFO
2016-04-27 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1154-1.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-439.nasl - Type : ACT_GATHER_INFO
2016-04-07 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0955-1.nasl - Type : ACT_GATHER_INFO
2016-04-05 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201604-01.nasl - Type : ACT_GATHER_INFO
2016-04-01 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-413.nasl - Type : ACT_GATHER_INFO
2016-03-25 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0873-1.nasl - Type : ACT_GATHER_INFO
2016-03-21 Name : The remote Fedora host is missing a security update.
File : fedora_2016-f4504e9445.nasl - Type : ACT_GATHER_INFO
2016-03-21 Name : The remote Fedora host is missing a security update.
File : fedora_2016-38b20aa50f.nasl - Type : ACT_GATHER_INFO
2016-02-09 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3471.nasl - Type : ACT_GATHER_INFO
2016-02-09 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3470.nasl - Type : ACT_GATHER_INFO
2016-02-09 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3469.nasl - Type : ACT_GATHER_INFO
2016-02-04 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2891-1.nasl - Type : ACT_GATHER_INFO
2016-02-02 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0083.nasl - Type : ACT_GATHER_INFO
2016-02-02 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0082.nasl - Type : ACT_GATHER_INFO
2016-02-01 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0081.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0082.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160128_qemu_kvm_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160128_qemu_kvm_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0083.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0082.nasl - Type : ACT_GATHER_INFO
2016-01-29 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0083.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2016-04-11 17:27:27
  • Multiple Updates
2016-04-08 00:27:33
  • Multiple Updates
2016-02-03 13:27:47
  • Multiple Updates
2016-01-30 13:25:35
  • Multiple Updates
2016-01-28 21:35:05
  • Multiple Updates
2016-01-28 21:30:39
  • First insertion