Executive Summary

Summary
Title openstack-nova security, bug fix, and enhancement update
Informations
Name RHSA-2014:0578 First vendor Publication 2014-05-29
Vendor RedHat Last vendor Modification 2014-05-29
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:N/AC:M/Au:S/C:P/I:N/A:N)
Cvss Base Score 3.5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated openstack-nova packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux OpenStack Platform 4.0.

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 OpenStack Platform 4.0 - noarch

3. Description:

OpenStack Compute (nova) launches and schedules large networks of virtual machines, creating a redundant and scalable cloud computing platform. Compute provides the software, control panels, and APIs required to orchestrate a cloud, including running virtual machine instances, managing networks, and controlling access through users and projects.

It was found that overwriting the disk inside of an instance with a malicious image, and then switching the instance to rescue mode, could potentially allow an authenticated user to access arbitrary files on the compute host depending on the file permissions and SELinux constraints of those files. Only setups that used libvirt to spawn instances and which had the use of cow images disabled ("use_cow_images = False" in nova configuration) were affected. (CVE-2014-0134)

Red Hat would like to thank the OpenStack Project for reporting this issue. Upstream acknowledges Stanislaw Pitucha from Hewlett Packard as the original reporter.

Bug fixes:

* The Compute libguestfs did not perform tear down correctly in certain cases, such as when attempting to perform SSH key injection when no SSH keys were specified. As a result, libguestfs qemu instances would remain running, even after the Compute instance with which they were associated was destroyed. This has been fixed and now tear down of libguestfs occurs correctly. (BZ#1022627)

* Qpid's driver reconnection delay is not configurable. This and the fact that the hard-coded delay was quite high became a blocker issue from an HA perspective. Making this value configurable is not possible for this version, so the hard-coded delay was changed. The new delay cap is 5 seconds. (BZ#1060772)

* Nova was creating a temporary VMware snapshot during a nova snapshot, but not deleting it on completion. Thus VMware guests could end up with a large number of unnecessary snapshots. The temporary VMware snapshot is now deleted on completion of the nova snapshot operation. (BZ#1069429)

* The Nova vmware driver was not passing the iscsi server location to the instance, hence it was not possible to add a cinder iscsi disk to a VMware instance. The nova vmware driver now correctly passes the iscsi server location to the instance and it is possible to add a cinder iscsi disk to a VMware instance. (BZ#1069432)

* The nova VMware driver was assigning VNC ports in a way which could cause collisions between guests. There was a small chance that 2 instances could be created with the same VNC port. If both instances ran on the same ESX host, only one of their consoles would be available. However, that console would be presented when requested for both instances. This has been fixed so that the nova VMware driver now allocates VNC ports which are unique to a vcenter, and a user of one instance will not be presented with the console of another. (BZ#1077017)

Enhancement:

* When troubleshooting production systems it is desirable to be able to trace all data base queries, web REST calls, messaging service RPC calls, and libvirt API calls associated with invocation of a user command or background job. Hence, the ability has been added to obtain a debug dump of the system state for an OpenStack service based process. For example, upon sending SIGUSR1, a dump of all native threads, green threads, live configuration, and any other relevant info is triggered. (BZ#1071469)

All openstack-nova users are advised to upgrade to these updated packages, which correct these issues and add this enhancement.

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/site/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1022627 - stale qemu processes left running in nova due to incorrect libguestfs cleanup 1060772 - nova qpid reconnection delay must be more accurate 1069429 - VMware: delete vm snapshot after nova snapshot 1069432 - VMware: iscsi target discovery fails while attaching volumes 1071469 - [RFE][nova]: Provide for a live debug dump of system state 1077017 - VMware: fix the VNC port allocation 1078002 - CVE-2014-0134 openstack-nova: Nova host data leak to vm instance in rescue mode 1081001 - Need to allow disabling of bandwidth polling periodic task 1085005 - openstack-nova: several instances are able to be configure the same bootable volume 1089070 - Depend on sufficiently new version of libvirt

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2014-0578.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-200 Information Exposure

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3

Nessus® Vulnerability Scanner

Date Description
2014-06-18 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2247-1.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-05-30 00:20:29
  • First insertion