Executive Summary
Summary | |
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Title | libvirt security and bug fix update |
Informations | |||
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Name | RHSA-2013:0831 | First vendor Publication | 2013-05-16 |
Vendor | RedHat | Last vendor Modification | 2013-05-16 |
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:N/AC:L/Au:N/C:N/I:N/A:P) | |||
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Cvss Base Score | 5 | Attack Range | Network |
Cvss Impact Score | 2.9 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated libvirt packages that fix one security issue and two bugs 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 Server Optional (v. 6) - x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - 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 remote management of virtualized systems. It was found that libvirtd leaked file descriptors when listing all volumes for a particular pool. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to cause libvirtd to consume all available file descriptors, preventing other users from using libvirtd services (such as starting a new guest) until libvirtd is restarted. (CVE-2013-1962) Red Hat would like to thank Edoardo Comar of IBM for reporting this issue. This update also fixes the following bugs: * Previously, libvirt made control group (cgroup) requests on files that it should not have. With older kernels, such nonsensical cgroup requests were ignored; however, newer kernels are stricter, resulting in libvirt logging spurious warnings and failures to the libvirtd and audit logs. The audit log failures displayed by the ausearch tool were similar to the following: root [date] - failed cgroup allow path rw /dev/kqemu With this update, libvirt no longer attempts the nonsensical cgroup actions, leaving only valid attempts in the libvirtd and audit logs (making it easier to search for real cases of failure). (BZ#958837) * Previously, libvirt used the wrong variable when constructing audit messages. This led to invalid audit messages, causing ausearch to format certain entries as having "path=(null)" instead of the correct path. This could prevent ausearch from locating events related to cgroup device ACL modifications for guests managed by libvirt. With this update, the audit messages are generated correctly, preventing loss of audit coverage. (BZ#958839) All users of libvirt are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, libvirtd will be restarted automatically. 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/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 953107 - CVE-2013-1962 libvirt: DoS (max count of open files exhaustion) due sockets leak in the storage pool 958837 - libvirt spams audit log with unneeded failures 958839 - Cgroup audit events with path are not escaped |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2013-0831.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-399 | Resource Management Errors |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:18238 | |||
Oval ID: | oval:org.mitre.oval:def:18238 | ||
Title: | USN-1895-1 -- libvirt vulnerability | ||
Description: | libvirt could be made to crash if it received specially crafted network traffic. | ||
Family: | unix | Class: | patch |
Reference(s): | USN-1895-1 CVE-2013-1962 | Version: | 7 |
Platform(s): | Ubuntu 13.04 | Product(s): | libvirt |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:21243 | |||
Oval ID: | oval:org.mitre.oval:def:21243 | ||
Title: | RHSA-2013:0831: libvirt security and bug fix update (Moderate) | ||
Description: | The remoteDispatchStoragePoolListAllVolumes function in the storage pool manager in libvirt 1.0.5 allows remote attackers to cause a denial of service (file descriptor consumption) via a large number of requests "to list all volumes for the particular pool." | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2013:0831-01 CESA-2013:0831 CVE-2013-1962 | Version: | 4 |
Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:23927 | |||
Oval ID: | oval:org.mitre.oval:def:23927 | ||
Title: | ELSA-2013:0831: libvirt security and bug fix update (Moderate) | ||
Description: | The remoteDispatchStoragePoolListAllVolumes function in the storage pool manager in libvirt 1.0.5 allows remote attackers to cause a denial of service (file descriptor consumption) via a large number of requests "to list all volumes for the particular pool." | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2013:0831-01 CVE-2013-1962 | Version: | 6 |
Platform(s): | Oracle Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:26991 | |||
Oval ID: | oval:org.mitre.oval:def:26991 | ||
Title: | DEPRECATED: ELSA-2013-0831 -- libvirt security and bug fix update (moderate) | ||
Description: | [0.10.2-18.0.1.el6_4.5] - Replace docs/et.png in tarball with blank image [0.10.2-18.el6_4.5] - daemon: Fix leak after listing volumes (CVE-2013-1962) - Don't try to add non-existant devices to ACL (rhbz#958837) - Avoid spamming logs with cgroups warnings (rhbz#958837) - audit: Properly encode device path in cgroup audit (rhbz#958839) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2013-0831 CVE-2013-1962 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
CPE : Common Platform Enumeration
Type | Description | Count |
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Application | 1 |
Nessus® Vulnerability Scanner
Date | Description |
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2014-11-08 | Name : The remote Red Hat host is missing a security update. File : redhat-RHSA-2013-0907.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2013-463.nasl - Type : ACT_GATHER_INFO |
2013-09-26 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201309-18.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2013-0831.nasl - Type : ACT_GATHER_INFO |
2013-07-03 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1895-1.nasl - Type : ACT_GATHER_INFO |
2013-05-29 | Name : The remote Fedora host is missing a security update. File : fedora_2013-8681.nasl - Type : ACT_GATHER_INFO |
2013-05-28 | Name : The remote Fedora host is missing a security update. File : fedora_2013-8635.nasl - Type : ACT_GATHER_INFO |
2013-05-17 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2013-0831.nasl - Type : ACT_GATHER_INFO |
2013-05-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2013-0831.nasl - Type : ACT_GATHER_INFO |
2013-05-17 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20130516_libvirt_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-02-17 11:57:13 |
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2013-05-29 21:21:39 |
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2013-05-29 13:21:33 |
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2013-05-16 21:18:17 |
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