Executive Summary
Summary | |
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Title | qemu-kvm security update |
Informations | |||
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Name | RHSA-2011:0345 | First vendor Publication | 2011-03-10 |
Vendor | RedHat | Last vendor Modification | 2011-03-10 |
Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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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:A/AC:H/Au:N/C:P/I:P/A:P) | |||
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Cvss Base Score | 4.3 | Attack Range | Adjacent network |
Cvss Impact Score | 6.4 | Attack Complexity | High |
Cvss Expoit Score | 3.2 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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 Desktop (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - x86_64 Red Hat Enterprise Linux Workstation (v. 6) - x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. Virtual Network Computing (VNC) is a remote display system. A flaw was found in the way the VNC "password" option was handled. Clearing a password disabled VNC authentication, allowing a remote user able to connect to the virtual machines' VNC ports to open a VNC session without authentication. (CVE-2011-0011) All users of qemu-kvm should upgrade to these updated packages, which contain a backported patch to resolve 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 668589 - CVE-2011-0011 qemu-kvm: Setting VNC password to empty string silently disables all authentication |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2011-0345.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-287 | Improper Authentication |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:13486 | |||
Oval ID: | oval:org.mitre.oval:def:13486 | ||
Title: | USN-1063-1 -- qemu-kvm vulnerability | ||
Description: | Neil Wilson discovered that if VNC passwords were blank in QEMU configurations, access to VNC sessions was allowed without a password instead of being disabled. A remote attacker could connect to running VNC sessions of QEMU and directly control the system. By default, QEMU does not start VNC sessions. | ||
Family: | unix | Class: | patch |
Reference(s): | USN-1063-1 CVE-2011-0011 | Version: | 5 |
Platform(s): | Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04 | Product(s): | qemu-kvm |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:21887 | |||
Oval ID: | oval:org.mitre.oval:def:21887 | ||
Title: | RHSA-2011:0345: qemu-kvm security update (Moderate) | ||
Description: | qemu-kvm before 0.11.0 disables VNC authentication when the password is cleared, which allows remote attackers to bypass authentication and establish VNC sessions. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2011:0345-01 CVE-2011-0011 | Version: | 4 |
Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | qemu-kvm |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:22978 | |||
Oval ID: | oval:org.mitre.oval:def:22978 | ||
Title: | ELSA-2011:0345: qemu-kvm security update (Moderate) | ||
Description: | qemu-kvm before 0.11.0 disables VNC authentication when the password is cleared, which allows remote attackers to bypass authentication and establish VNC sessions. | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011:0345-01 CVE-2011-0011 | Version: | 6 |
Platform(s): | Oracle Linux 6 | Product(s): | qemu-kvm |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27339 | |||
Oval ID: | oval:org.mitre.oval:def:27339 | ||
Title: | DEPRECATED: ELSA-2011-0345 -- qemu-kvm security update (moderate) | ||
Description: | [qemu-kvm-0.12.1.2-2.113.el6_0.8] - kvm-Revert-blockdev-Fix-drive_del-not-to-crash-when-driv.patch [bz#677170] - kvm-Revert-blockdev-check-dinfo-ptr-before-using-v2.patch [bz#677170] - kvm-Revert-Implement-drive_del-to-decouple-block-removal.patch [bz#677170] - kvm-Revert-block-Catch-attempt-to-attach-multiple-device.patch [bz#677170] - kvm-Revert-qdev-Decouple-qdev_prop_drive-from-DriveInfo-.patch [bz#677170] - kvm-Revert-blockdev-Clean-up-automatic-drive-deletion-v2.patch [bz#677170] - kvm-Revert-blockdev-New-drive_get_by_blockdev-v2.patch [bz#677170] - kvm-Revert-qdev-Don-t-leak-string-property-value-on-hot-.patch [bz#677170] - kvm-Revert-ide-Split-non-qdev-code-off-ide_init2.patch [bz#677170] - kvm-Revert-ide-Change-ide_init_drive-to-require-valid-di.patch [bz#677170] - kvm-Revert-ide-Split-ide_init1-off-ide_init2-v2.patch [bz#677170] - kvm-Revert-ide-Remove-redundant-IDEState-member-conf.patch [bz#677170] - Related: bz#677170 (drive_del command to let libvirt safely remove block device from guest) [qemu-kvm-0.12.1.2-2.113.el6_0.7] - kvm-ide-Remove-redundant-IDEState-member-conf.patch [bz#677170] - kvm-ide-Split-ide_init1-off-ide_init2-v2.patch [bz#677170] - kvm-ide-Change-ide_init_drive-to-require-valid-dinfo-arg.patch [bz#677170] - kvm-ide-Split-non-qdev-code-off-ide_init2.patch [bz#677170] - kvm-qdev-Don-t-leak-string-property-value-on-hot-unplug.patch [bz#677170] - kvm-blockdev-New-drive_get_by_blockdev-v2.patch [bz#677170] - kvm-blockdev-Clean-up-automatic-drive-deletion-v2.patch [bz#677170] - kvm-qdev-Decouple-qdev_prop_drive-from-DriveInfo-v2.patch [bz#677170] - kvm-block-Catch-attempt-to-attach-multiple-devices-to-a-.patch [bz#677170] - kvm-Implement-drive_del-to-decouple-block-removal-from-d.patch [bz#677170] - kvm-blockdev-check-dinfo-ptr-before-using-v2.patch [bz#677170] - kvm-blockdev-Fix-drive_del-not-to-crash-when-drive-is-no.patch [bz#677170] - kvm-Fix-CVE-2011-0011-qemu-kvm-Setting-VNC-password-to-e.patch [bz#668598] - Resolves: bz#668598 (CVE-2011-0011 qemu-kvm: Setting VNC password to empty string silently disables all authentication [rhel-6.0.z]) - Resolves: bz#677170 (drive_del command to let libvirt safely remove block device from guest) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011-0345 CVE-2011-0011 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | qemu-kvm |
Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
---|---|
2012-06-06 | Name : RedHat Update for qemu-kvm RHSA-2011:0345-01 File : nvt/gb_RHSA-2011_0345-01_qemu-kvm.nasl |
2011-05-12 | Name : Debian Security Advisory DSA 2230-1 (qemu-kvm) File : nvt/deb_2230_1.nasl |
2011-02-16 | Name : Ubuntu Update for qemu-kvm vulnerability USN-1063-1 File : nvt/gb_ubuntu_USN_1063_1.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
---|---|
70992 | QEMU Empty VNC Password Authentication Bypass QEMU contains a flaw related to the incorrect disabling of authentication when empty VNC passwords are set. This may allow an attacker to bypass password authentication and access the VNC service. |
Nessus® Vulnerability Scanner
Date | Description |
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2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0345.nasl - Type : ACT_GATHER_INFO |
2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0345.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110310_qemu_kvm_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2011-05-02 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2230.nasl - Type : ACT_GATHER_INFO |
2011-02-15 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1063-1.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-02-17 11:54:28 |
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