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Difference between revisions of "SVG:Advisory-SVG-CVE-2017-1000364"

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"To minimize the risk to the EGI infrastructure arising from software vulnerabilities"
"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 11]  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.   
The risk is that assessed by the group, according to the EGI SVG issue handling procedure [R 11]   
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:-
Others may re-use this information provided they:-

Revision as of 13:53, 21 June 2017

Main page Software Security Checklist Issue Handling Advisories Notes On Risk Advisory Template More

Advisory-SVG-CVE-2017-1000364


Title:       EGI SVG 'Heads Up' [TLP:WHITE] Stack clash memory allocation vulnerability CVE-2017-1000364  
             [EGI-SVG-CVE-2017-1000364] 

Date:        2017-06-21 
Updated:     

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

Possibly 'Critical' risk vulnerability concerning the linux kernel and glibc

Package : Linux Kernel
CVE ID  : CVE-2017-1000364, CVE-2017-1000366, CVE-2017-1000367

A memory allocation vulnerability has been found which may allow an authorized user 
to gain root privileges. [R 1] [R 2] [R 3] [R 4] [R 5] [R 6].

For the EGI infrastructure this affects Worker Nodes (WNs), shared User interface (UI) instances, 
and in the EGI Federated cloud Virtual Machines (VMs) which allow an unprivileged user to login.  

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

We are not recommending action at present, as there appears to be problems with the updates. 
See [R 7] [R 8] [R 9]

EGI SVG and IRTF members are monitoring the situation.

Sites should be aware that if a working exploit is made public the risk for this vulnerability will 
be assessed as 'Critical'. 

If this occurs, and suitable updates are available, sites will be required to apply updates within 7 days, 
and sites failing to act and/or failing to respond to requests from the EGI CSIRT team risk site suspension. 


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

All versions of Linux are affected.

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

For 32 bit machines this issue is already critical, but it is unlikely that 32 bit machines 
are used much on the EGI infrastructure. 

If a working exploit for 64 bit machines is made public then this will be assessed as 'Critical' 
in the EGI infrastructure. 

For more information see [R 10]


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-CVE-2017-1000364   

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 another 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 according to the procedure defined in [R 11]  


References
==========

[R 1] https://blog.qualys.com/securitylabs/2017/06/19/the-stack-clash

[R 2] https://www.scientificlinux.org/

[R 3] https://access.redhat.com/security/cve/CVE-2017-1000364

[R 4] https://access.redhat.com/security/cve/CVE-2017-1000366

[R 5] http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-1000364.html  

[R 6] https://security-tracker.debian.org/tracker/CVE-2017-1000364

[R 7] https://bugs.centos.org/view.php?id=13453

[R 8] https://www.icinga.com/2017/06/20/advisory-for-latest-security-updates-on-rhel-7/

[R 9] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865311

[R 10] https://access.redhat.com/security/vulnerabilities/stackguard

[R 11] https://documents.egi.eu/public/ShowDocument?docid=2538

Credit
======

SVG was alerted to this vulnerability by Sven Gabriel 


Timeline  
========
Yyyy-mm-dd  [EGI-SVG-2017-CVE-2017-1000364] 

2017-06-19 (evening) SVG alerted to this issue by Sven Gabriel
2017-06-20 Acknowledgement from the EGI SVG to the reporter
2017-06-20 Investigation of vulnerability and relevance to EGI carried out 
2017-06-20 Updated packages available for most versions of linux
2017-06-21 Appears that there are problems with these updates
2017-06-21 SVG decided to send 'Heads up'.


Context
=======

This 'heads up' 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 11]  
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


On behalf of the EGI SVG,