Executive Summary

Summary
Title Nova vulnerabilities
Informations
Name USN-2000-1 First vendor Publication 2013-10-23
Vendor Ubuntu Last vendor Modification 2013-10-23
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:S/C:P/I:P/A:P)
Cvss Base Score 6 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 13.04 - Ubuntu 12.10 - Ubuntu 12.04 LTS

Summary:

Nova could be made to crash if it received specially crafted network requests.

Software Description: - nova: OpenStack Compute cloud infrastructure

Details:

It was discovered that Nova did not properly enforce the is_public property when determining flavor access. An authenticated attacker could exploit this to obtain sensitive information in private flavors. This issue only affected Ubuntu 12.10 and 13.10. (CVE-2013-2256, CVE-2013-4278)

Grant Murphy discovered that Nova would allow XML entity processing. A remote unauthenticated attacker could exploit this using the Nova API to cause a denial of service via resource exhaustion. This issue only affected Ubuntu 13.10. (CVE-2013-4179)

Vishvananda Ishaya discovered that Nova inefficiently handled network security group updates when Nova was configured to use nova-network. An authenticated attacker could exploit this to cause a denial of service. (CVE-2013-4185)

Jaroslav Henner discovered that Nova did not properly handle certain inputs to the instance console when Nova was configured to use Apache Qpid. An authenticated attacker could exploit this to cause a denial of service on the compute node running the instance. By default, Ubuntu uses RabbitMQ instead of Qpid. (CVE-2013-4261)

Update instructions:

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

Ubuntu 13.04:
python-nova 1:2013.1.3-0ubuntu1.1

Ubuntu 12.10:
python-nova 2012.2.4-0ubuntu3.1

Ubuntu 12.04 LTS:
python-nova 2012.1.3+stable-20130423-e52e6912-0ubuntu1.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2000-1
CVE-2013-2256, CVE-2013-4179, CVE-2013-4185, CVE-2013-4261,
CVE-2013-4278

Package Information:
https://launchpad.net/ubuntu/+source/nova/1:2013.1.3-0ubuntu1.1
https://launchpad.net/ubuntu/+source/nova/2012.2.4-0ubuntu3.1

https://launchpad.net/ubuntu/+source/nova/2012.1.3+stable-20130423-e52e6912-0ubuntu1.2

Original Source

Url : http://www.ubuntu.com/usn/USN-2000-1

CWE : Common Weakness Enumeration

% Id Name
40 % CWE-264 Permissions, Privileges, and Access Controls
40 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
20 % CWE-310 Cryptographic Issues

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:18807
 
Oval ID: oval:org.mitre.oval:def:18807
Title: USN-2000-1 -- nova vulnerabilities
Description: Nova could be made to crash if it received specially crafted network requests.
Family: unix Class: patch
Reference(s): USN-2000-1
CVE-2013-2256
CVE-2013-4278
CVE-2013-4179
CVE-2013-4185
CVE-2013-4261
Version: 5
Platform(s): Ubuntu 13.04
Ubuntu 12.10
Ubuntu 12.04
Product(s): nova
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 10
Application 2
Application 1
Application 3
Application 29
Application 1

Nessus® Vulnerability Scanner

Date Description
2013-10-24 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2000-1.nasl - Type : ACT_GATHER_INFO
2013-10-24 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2005-1.nasl - Type : ACT_GATHER_INFO
2013-09-05 Name : The remote Fedora host is missing a security update.
File : fedora_2013-15373.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
1
2
Date Informations
2014-02-17 12:02:39
  • Multiple Updates
2013-10-30 13:22:44
  • Multiple Updates
2013-10-24 00:18:47
  • First insertion