Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title qemu-kvm-rhev security update
Informations
Name RHSA-2016:1655 First vendor Publication 2016-08-23
Vendor RedHat Last vendor Modification 2016-08-23
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:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 4.9 Attack Range Local
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An update for qemu-kvm-rhev is now available for Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 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-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager.

Security Fix(es):

* Quick Emulator(Qemu) built with the Block driver for iSCSI images support (virtio-blk) is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl(2) calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host. (CVE-2016-5126)

* Quick emulator(Qemu) built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement and therefore causes unbounded memory allocation on the host controlled by the guest. (CVE-2016-5403)

Red Hat would like to thank hongzhenhao (Marvel Team) for reporting CVE-2016-5403.

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

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.

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

1340924 - CVE-2016-5126 Qemu: block: iscsi: buffer overflow in iscsi_aio_ioctl 1358359 - CVE-2016-5403 Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2016-1655.html

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
50 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 153
Application 5
Application 1
Os 5
Os 1
Os 4
Os 1
Os 2
Os 6
Os 2
Os 6
Os 6
Os 4
Os 2

Nessus® Vulnerability Scanner

Date Description
2017-03-30 Name : The remote OracleVM host is missing a security update.
File : oraclevm_OVMSA-2017-0055.nasl - Type : ACT_GATHER_INFO
2016-11-14 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2781-1.nasl - Type : ACT_GATHER_INFO
2016-11-10 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3125-1.nasl - Type : ACT_GATHER_INFO
2016-11-07 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2725-1.nasl - Type : ACT_GATHER_INFO
2016-10-27 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1234.nasl - Type : ACT_GATHER_INFO
2016-10-26 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2628-1.nasl - Type : ACT_GATHER_INFO
2016-10-26 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2589-1.nasl - Type : ACT_GATHER_INFO
2016-10-26 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2533-1.nasl - Type : ACT_GATHER_INFO
2016-10-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1170.nasl - Type : ACT_GATHER_INFO
2016-10-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1169.nasl - Type : ACT_GATHER_INFO
2016-09-29 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160927_kvm_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2016-09-28 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-1943.nasl - Type : ACT_GATHER_INFO
2016-09-28 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-1943.nasl - Type : ACT_GATHER_INFO
2016-09-28 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-1943.nasl - Type : ACT_GATHER_INFO
2016-09-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201609-01.nasl - Type : ACT_GATHER_INFO
2016-09-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2100-1.nasl - Type : ACT_GATHER_INFO
2016-09-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2093-1.nasl - Type : ACT_GATHER_INFO
2016-08-17 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160811_qemu_kvm_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2016-08-15 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3047-2.nasl - Type : ACT_GATHER_INFO
2016-08-15 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-1606.nasl - Type : ACT_GATHER_INFO
2016-08-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-1606.nasl - Type : ACT_GATHER_INFO
2016-08-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-1606.nasl - Type : ACT_GATHER_INFO
2016-08-11 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160809_qemu_kvm_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2016-08-11 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-1586.nasl - Type : ACT_GATHER_INFO
2016-08-11 Name : The remote OracleVM host is missing a security update.
File : oraclevm_OVMSA-2016-0096.nasl - Type : ACT_GATHER_INFO
2016-08-10 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-1585.nasl - Type : ACT_GATHER_INFO
2016-08-10 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-1585.nasl - Type : ACT_GATHER_INFO
2016-08-10 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-1585.nasl - Type : ACT_GATHER_INFO
2016-08-09 Name : The remote Fedora host is missing a security update.
File : fedora_2016-0049aa6e5d.nasl - Type : ACT_GATHER_INFO
2016-08-08 Name : The remote Fedora host is missing a security update.
File : fedora_2016-01cc766201.nasl - Type : ACT_GATHER_INFO
2016-08-05 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3047-1.nasl - Type : ACT_GATHER_INFO
2016-08-02 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_06574c62585411e6b334002590263bf5.nasl - Type : ACT_GATHER_INFO
2016-08-01 Name : The remote Debian host is missing a security update.
File : debian_DLA-573.nasl - Type : ACT_GATHER_INFO
2016-07-15 Name : The remote Fedora host is missing a security update.
File : fedora_2016-a80eab65ba.nasl - Type : ACT_GATHER_INFO
2016-07-12 Name : The remote Debian host is missing a security update.
File : debian_DLA-574.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2016-08-23 09:24:12
  • First insertion