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SVG:Advisory-SVG-2016-12231

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Advisory-SVG-2016-12231


Title:       EGI SVG Advisory [TLP:WHITE] OpenStack Nova Metadata leak 
             - sites should check [EGI-SVG-2016-12231]  

Date:        2017-01-11 
Updated:    

Affected software and risk
==========================

Vulnerability concerning OpenStack Nova Metadata information leak - Vulnerability in actual software 
- but if configured as instructed should not be exploitable

Package : OpenStack Nova
CVE ID  : (None at present)
Bug ID  : OpenStack 1563954

OpenStack Nova may allow metadata to be leaked, this is a problem if such metadata contains 
sensitive information.  
This is described in OpenStack Security Notice 0074 [R 1] 


Actions required/recommended
============================

Nova metadata service should not be used for sensitive information as described 
in [R 1]

Sites and Users who provide metadata which is used by OpenStack Nova should check that they are not 
including any sensitive data. 

Affected software details
=========================

See [R 1] [R 2]

More information
================

See [R 1] [R 2]  

An attacker with access to a compute instance, i.e. a VM, in the cloud could send a request to the metadata service.  
Hence an authorized VM user, i.e. any user able to perform an http request from a VM, might thus obtain sensitive 
information if Nova happens to contain any.  This is independent of who started a VM.

That scenario then may affect some of the Fed Cloud sites, as well as grid sites that happen to provide resources 
through OpenStack.


Component installation information
==================================

N/A at present.


TLP and URL
===========

** WHITE information - Unlimited distribution - see https://wiki.egi.eu/wiki/EGI_CSIRT:TLP for distribution restrictions***                    
URL:   https://wiki.egi.eu/wiki/SVG:Advisory-SVG-2016-12231  

Minor updates may be made without re-distribution to the sites


Comments
========

Comments or questions should be sent to svg-rat  at  mailman.egi.eu

If you find or become aware of a vulnerability which is relevant to EGI you may report it by e-mail to  

report-vulnerability at egi.eu
 
the EGI Software Vulnerability Group will take a look.  


References
==========

[R 1] https://wiki.openstack.org/wiki/OSSN/OSSN-0074

[R 2] https://bugs.launchpad.net/nova/+bug/1563954

[R 3] https://documents.egi.eu/public/ShowDocument?docid=2538

Credit
======

SVG was alerted to this vulnerability by Baptiste Grenier


Timeline  
========
Yyyy-mm-dd  [EGI-SVG-2016-12231] 

2016-12-19 SVG alerted to this issue by Baptiste Grenier
2016-12-19 Acknowledgement from the EGI SVG to the reporter
2016-12-20 Investigation of vulnerability and relevance to EGI carried out by various  SVG members
2016-12-21 Concluded that an alert should be sent, suggesting sites check
2017-01-11 Advisory/Alert sent to sites


Context
=======

This advisory has been prepared as part of the effort to fulfil EGI SVG's purpose 
"To minimize the risk to the EGI infrastructure arising from software vulnerabilities"

The risk is that assessed by the group, according to the EGI SVG issue handling procedure [R 3]  
in the context of how the software is used in the EGI infrastructure. It is the opinion of the group, 
we do not guarantee it to be correct. The risk may also be higher or lower in other deployments depending 
on how the software is used.   

Others may re-use this information provided they:-

1) Respect the provided TLP classification

2) Credit the EGI https://www.egi.eu/ Software Vulnerability Group