Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title libvirt vulnerabilities
Informations
Name USN-2867-1 First vendor Publication 2016-01-12
Vendor Ubuntu Last vendor Modification 2016-01-12
Severity (Vendor) N/A Revision N/A

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:N/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10 - Ubuntu 15.04 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in libvirt.

Software Description: - libvirt: Libvirt virtualization toolkit

Details:

It was discovered that libvirt incorrectly handled the firewall rules on bridge networks when the daemon was restarted. This could result in an unintended firewall configuration. This issue only applied to Ubuntu 12.04 LTS. (CVE-2011-4600)

Peter Krempa discovered that libvirt incorrectly handled locking when certain ACL checks failed. A local attacker could use this issue to cause libvirt to stop responding, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-8136)

Luyao Huang discovered that libvirt incorrectly handled VNC passwords in shapshot and image files. A remote authenticated user could use this issue to possibly obtain VNC passwords. This issue only affected Ubuntu 14.04 LTS. (CVE-2015-0236)

Han Han discovered that libvirt incorrectly handled volume creation failure when used with NFS. A remote authenticated user could use this issue to cause libvirt to crash, resulting in a denial of service. This issue only applied to Ubuntu 15.10. (CVE-2015-5247)

Ossi Herrala and Joonas Kuorilehto discovered that libvirt incorrectly performed storage pool name validation. A remote authenticated user could use this issue to bypass ACLs and gain access to unintended files. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.04 and Ubuntu 15.10. (CVE-2015-5313)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 15.10:
libvirt-bin 1.2.16-2ubuntu11.15.10.2
libvirt0 1.2.16-2ubuntu11.15.10.2

Ubuntu 15.04:
libvirt-bin 1.2.12-0ubuntu14.4
libvirt0 1.2.12-0ubuntu14.4

Ubuntu 14.04 LTS:
libvirt-bin 1.2.2-0ubuntu13.1.16
libvirt0 1.2.2-0ubuntu13.1.16

Ubuntu 12.04 LTS:
libvirt-bin 0.9.8-2ubuntu17.23
libvirt0 0.9.8-2ubuntu17.23

After a standard system update you need to reboot your computer to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2867-1
CVE-2011-4600, CVE-2014-8136, CVE-2015-0236, CVE-2015-5247,
CVE-2015-5313

Package Information:
https://launchpad.net/ubuntu/+source/libvirt/1.2.16-2ubuntu11.15.10.2
https://launchpad.net/ubuntu/+source/libvirt/1.2.12-0ubuntu14.4
https://launchpad.net/ubuntu/+source/libvirt/1.2.2-0ubuntu13.1.16
https://launchpad.net/ubuntu/+source/libvirt/0.9.8-2ubuntu17.23

Original Source

Url : http://www.ubuntu.com/usn/USN-2867-1

CWE : Common Weakness Enumeration

% Id Name
40 % CWE-284 Access Control (Authorization) Issues
20 % CWE-264 Permissions, Privileges, and Access Controls
20 % CWE-200 Information Exposure
20 % CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 4
Os 1
Os 2
Os 1
Os 1
Os 1
Os 1

OpenVAS Exploits

Date Description
2012-10-19 Name : Fedora Update for libvirt FEDORA-2012-15640
File : nvt/gb_fedora_2012_15640_libvirt_fc16.nasl
2012-08-24 Name : Fedora Update for libvirt FEDORA-2012-11843
File : nvt/gb_fedora_2012_11843_libvirt_fc16.nasl
2012-04-02 Name : Fedora Update for libvirt FEDORA-2011-17267
File : nvt/gb_fedora_2011_17267_libvirt_fc16.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
78232 libvirt bridge Forward Mode Firewall Port Access Restriction Weakness

Nessus® Vulnerability Scanner

Date Description
2016-12-15 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20161103_libvirt_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2016-12-05 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201612-10.nasl - Type : ACT_GATHER_INFO
2016-11-28 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-2577.nasl - Type : ACT_GATHER_INFO
2016-11-11 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-2577.nasl - Type : ACT_GATHER_INFO
2016-11-04 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-2577.nasl - Type : ACT_GATHER_INFO
2016-04-05 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0931-1.nasl - Type : ACT_GATHER_INFO
2016-04-01 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0923-1.nasl - Type : ACT_GATHER_INFO
2016-03-04 Name : The remote Fedora host is missing a security update.
File : fedora_2015-30b347dff1.nasl - Type : ACT_GATHER_INFO
2016-03-04 Name : The remote Fedora host is missing a security update.
File : fedora_2015-2c9678da8c.nasl - Type : ACT_GATHER_INFO
2016-02-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0304-1.nasl - Type : ACT_GATHER_INFO
2016-01-27 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-82.nasl - Type : ACT_GATHER_INFO
2016-01-26 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-77.nasl - Type : ACT_GATHER_INFO
2016-01-13 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2867-1.nasl - Type : ACT_GATHER_INFO
2015-12-21 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_f714b4c9a6c111e588d7047d7b492d07.nasl - Type : ACT_GATHER_INFO
2015-03-30 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-115.nasl - Type : ACT_GATHER_INFO
2015-03-30 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-070.nasl - Type : ACT_GATHER_INFO
2015-03-26 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20150305_libvirt_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2015-03-18 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0323.nasl - Type : ACT_GATHER_INFO
2015-03-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0323.nasl - Type : ACT_GATHER_INFO
2015-03-05 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0323.nasl - Type : ACT_GATHER_INFO
2015-02-18 Name : The remote Fedora host is missing a security update.
File : fedora_2015-1883.nasl - Type : ACT_GATHER_INFO
2015-02-16 Name : The remote Fedora host is missing a security update.
File : fedora_2015-1892.nasl - Type : ACT_GATHER_INFO
2015-02-09 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-112.nasl - Type : ACT_GATHER_INFO
2015-02-09 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-035.nasl - Type : ACT_GATHER_INFO
2015-01-16 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-023.nasl - Type : ACT_GATHER_INFO
2015-01-05 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-3.nasl - Type : ACT_GATHER_INFO
2015-01-05 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-2.nasl - Type : ACT_GATHER_INFO
2014-12-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201412-36.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2012-78.nasl - Type : ACT_GATHER_INFO
2012-01-06 Name : The remote Fedora host is missing a security update.
File : fedora_2011-17267.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2016-04-19 00:28:47
  • Multiple Updates
2016-04-14 21:30:33
  • Multiple Updates
2016-04-12 05:37:11
  • Multiple Updates
2016-01-14 13:26:25
  • Multiple Updates
2016-01-12 21:23:11
  • First insertion