Executive Summary

Summary
Title libvirt security and bug fix update
Informations
Name RHSA-2011:0479 First vendor Publication 2011-05-02
Vendor RedHat Last vendor Modification 2011-05-02
Severity (Vendor) Moderate 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:A/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 3.3 Attack Range Adjacent network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 6.5 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated libvirt packages that fix one security issue and one bug 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) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remotely managing virtualized systems.

A flaw was found in the way libvirtd handled error reporting for concurrent connections. A remote attacker able to establish read-only connections to libvirtd on a server could use this flaw to crash libvirtd. (CVE-2011-1486)

This update also fixes the following bug:

* Previously, running qemu under a different UID prevented it from accessing files with mode 0660 permissions that were owned by a different user, but by a group that qemu was a member of. (BZ#668692)

All libvirt users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, libvirtd must be restarted ("service libvirtd restart") 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/):

668692 - qemu process is spawned with no supplementary groups 693391 - CVE-2011-1486 libvirt: error reporting in libvirtd is not thread safe

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0479.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-399 Resource Management Errors

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13022
 
Oval ID: oval:org.mitre.oval:def:13022
Title: DSA-2280-1 libvirt -- several
Description: It was discovered that libvirt, a library for interfacing with different virtualization systems, is prone to an integer overflow. Additionally, the stable version is prone to a denial of service, because its error reporting is not thread-safe. For the stable distribution, these problems have been fixed in version 0.8.3-5+squeeze2.
Family: unix Class: patch
Reference(s): DSA-2280-1
CVE-2011-2511
CVE-2011-1486
Version: 5
Platform(s): Debian GNU/Linux 5.0
Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21916
 
Oval ID: oval:org.mitre.oval:def:21916
Title: RHSA-2011:0478: libvirt security update (Moderate)
Description: libvirtd in libvirt before 0.9.0 does not use thread-safe error reporting, which allows remote attackers to cause a denial of service (crash) by causing multiple threads to report errors at the same time.
Family: unix Class: patch
Reference(s): RHSA-2011:0478-01
CESA-2011:0478
CVE-2011-1486
Version: 4
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21945
 
Oval ID: oval:org.mitre.oval:def:21945
Title: RHSA-2011:0479: libvirt security and bug fix update (Moderate)
Description: libvirtd in libvirt before 0.9.0 does not use thread-safe error reporting, which allows remote attackers to cause a denial of service (crash) by causing multiple threads to report errors at the same time.
Family: unix Class: patch
Reference(s): RHSA-2011:0479-01
CVE-2011-1486
Version: 4
Platform(s): Red Hat Enterprise Linux 6
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22520
 
Oval ID: oval:org.mitre.oval:def:22520
Title: ELSA-2011:0478: libvirt security update (Moderate)
Description: libvirtd in libvirt before 0.9.0 does not use thread-safe error reporting, which allows remote attackers to cause a denial of service (crash) by causing multiple threads to report errors at the same time.
Family: unix Class: patch
Reference(s): ELSA-2011:0478-01
CVE-2011-1486
Version: 6
Platform(s): Oracle Linux 5
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23542
 
Oval ID: oval:org.mitre.oval:def:23542
Title: ELSA-2011:0479: libvirt security and bug fix update (Moderate)
Description: libvirtd in libvirt before 0.9.0 does not use thread-safe error reporting, which allows remote attackers to cause a denial of service (crash) by causing multiple threads to report errors at the same time.
Family: unix Class: patch
Reference(s): ELSA-2011:0479-01
CVE-2011-1486
Version: 6
Platform(s): Oracle Linux 6
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27967
 
Oval ID: oval:org.mitre.oval:def:27967
Title: DEPRECATED: ELSA-2011-0479 -- libvirt security and bug fix update (moderate)
Description: [0.8.1-27.0.1.el6_0.6] - Replace docs/et.png in tarball with blank image [0.8.1-27.el6_0.6] - Properly initialize supplementary groups for qemu process (rhbz#668692) - Make error reporting in libvirtd thread safe (CVE-2011-1486)
Family: unix Class: patch
Reference(s): ELSA-2011-0479
CVE-2011-1486
Version: 4
Platform(s): Oracle Linux 6
Product(s): libvirt
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27997
 
Oval ID: oval:org.mitre.oval:def:27997
Title: DEPRECATED: ELSA-2011-0478 -- libvirt security update (moderate)
Description: [0.8.2-15.0.1.el5_6.4] - Replaced docs/et.png in tarball [0.8.2-15.el5_6.4] - Make error reporting in libvirtd thread safe (CVE-2011-1486)
Family: unix Class: patch
Reference(s): ELSA-2011-0478
CVE-2011-1486
Version: 4
Platform(s): Oracle Linux 5
Product(s): libvirt
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 68

OpenVAS Exploits

Date Description
2012-07-30 Name : CentOS Update for libvirt CESA-2011:0478 centos5 x86_64
File : nvt/gb_CESA-2011_0478_libvirt_centos5_x86_64.nasl
2012-06-06 Name : RedHat Update for libvirt RHSA-2011:0479-01
File : nvt/gb_RHSA-2011_0479-01_libvirt.nasl
2012-03-12 Name : Gentoo Security Advisory GLSA 201202-07 (libvirt)
File : nvt/glsa_201202_07.nasl
2011-08-09 Name : CentOS Update for libvirt CESA-2011:0478 centos5 i386
File : nvt/gb_CESA-2011_0478_libvirt_centos5_i386.nasl
2011-08-03 Name : Debian Security Advisory DSA 2280-1 (libvirt)
File : nvt/deb_2280_1.nasl
2011-07-27 Name : Fedora Update for libvirt FEDORA-2011-9062
File : nvt/gb_fedora_2011_9062_libvirt_fc14.nasl
2011-06-20 Name : Ubuntu Update for libvirt USN-1152-1
File : nvt/gb_ubuntu_USN_1152_1.nasl
2011-04-21 Name : Fedora Update for libvirt FEDORA-2011-4870
File : nvt/gb_fedora_2011_4870_libvirt_fc13.nasl
2011-04-19 Name : Fedora Update for libvirt FEDORA-2011-4896
File : nvt/gb_fedora_2011_4896_libvirt_fc14.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
72643 libvirt libvirtd Multiple Thread Error Reporting Remote DoS

libvirtd in libvirt contains a flaw that may allow a remote denial of service. The issue is triggered when multiple threads report errors simultaneously, and will result in loss of availability for the service.

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_4_xen-201105-110510.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_4_libvirt-110407.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_xen-201105-110510.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_libvirt-110407.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0478.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0479.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0478.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110502_libvirt_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-02-28 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201202-07.nasl - Type : ACT_GATHER_INFO
2011-07-20 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2280.nasl - Type : ACT_GATHER_INFO
2011-06-17 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-1152-1.nasl - Type : ACT_GATHER_INFO
2011-06-01 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_xen-201105-110505.nasl - Type : ACT_GATHER_INFO
2011-05-05 Name : The remote openSUSE host is missing a security update.
File : suse_11_2_libvirt-110407.nasl - Type : ACT_GATHER_INFO
2011-05-05 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2011-0478.nasl - Type : ACT_GATHER_INFO
2011-05-03 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0479.nasl - Type : ACT_GATHER_INFO
2011-04-19 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4870.nasl - Type : ACT_GATHER_INFO
2011-04-18 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4964.nasl - Type : ACT_GATHER_INFO
2011-04-12 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4896.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:54:39
  • Multiple Updates