Executive Summary
| Summary | |
|---|---|
| Title | libvirt regression update |
| Informations | |||
|---|---|---|---|
| Name | DSA-2650 | First vendor Publication | 2013-03-15 |
| Vendor | Debian | Last vendor Modification | 2013-03-17 |
| Severity (Vendor) | N/A | Revision | 2 |
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:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 3.6 | Attack Range | Local |
| Cvss Impact Score | 4.9 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| The recent security update for libvirt was found to cause a regression. The kvm/qemu processes weren't run as the `kvm` user anymore in order to fix the file/device ownership changes, but the processes where not correctly configured to use the `kvm` group either. When the user would try to run a virtual machine, the process was denied access to the /dev/kvm device node, preventing the virtual machine to run. For the stable distribution (squeeze), this problem has been fixed in version 0.8.3-5+squeeze5. We recommend that you upgrade your libvirt packages. |
Original Source
| Url : http://www.debian.org/security/2013/dsa-2650 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:19927 | |||
| Oval ID: | oval:org.mitre.oval:def:19927 | ||
| Title: | DSA-2650-1 libvirt - files and device nodes ownership change to kvm group | ||
| Description: | Bastian Blank discovered that libvirtd, a daemon for management of virtual machines, network and storage, would change ownership of devices files so they would be owned by user <q>libvirt-qemu</q> and group <q>kvm</q>, which is a general purpose group not specific to libvirt, allowing unintended write access to those devices and files for the kvm group members. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2650-1 CVE-2013-1766 | Version: | 5 |
| Platform(s): | Debian GNU/Linux 6.0 Debian GNU/kFreeBSD 6.0 | Product(s): | libvirt |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:29341 | |||
| Oval ID: | oval:org.mitre.oval:def:29341 | ||
| Title: | DSA-2650-2 -- libvirt -- files and device nodes ownership change to kvm group | ||
| Description: | Bastian Blank discovered that libvirtd, a daemon for management of virtual machines, network and storage, would change ownership of devices files so they would be owned by user libvirt-qemu and group kvm, which is a general purpose group not specific to libvirt, allowing unintended write access to those devices and files for the kvm group members. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2650-2 CVE-2013-1766 | Version: | 3 |
| Platform(s): | Debian GNU/Linux 6.0 Debian GNU/kFreeBSD 6.0 | Product(s): | libvirt |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-03-17 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2650.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:31:45 |
|
| 2013-03-21 21:19:22 |
|
| 2013-03-20 21:19:29 |
|
| 2013-03-18 00:17:51 |
|
| 2013-03-16 00:17:28 |
|
