SVG:Advisory-SVG-CVE-2016-5195

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Advisory-SVG-CVE-2016-5195

Title:       EGI SVG 'Heads up'[TLP:WHITE ] 'CRITICAL' Risk CVE-2016-5195 Linux 

kernel privilege escalation [EGI-SVG-CVE-2016-5195] 

Date:        2016-10-20
Updated:     

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

CRITICAL risk vulnerability concerning Linux kernel

Package : Linux Kernel
CVE ID  : CVE-2016-5195

A kernel vulnerability has been found concerning a race condition allowing an unprivileged local user 
to gain write access to otherwise read only mappings and increase their privilege in the system. 

At present this is a 'Heads up'.  However sites running an OS where patches are available should urgently 
install the new version. (Currently Debian and Ubuntu.) 

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

Sites running an OS where patches are available (currently Debian and Ubuntu) are advised to install the 
new version within the next 7 days. Machines allowing unprivileged user access, such as Grid Worker Nodes, 
should be prioritised. At this stage a rolling update and reboot is recommended as sufficient.

Other sites, running an OS where patches are not available yet should prepare the update, which they will 
be required to apply within 7 days when new version will be available. Sites are also encouraged to investigate 
workarounds (e.g. systemtap) for systems with direct unprivileged user access, such as User Interfaces.

Sites failing to act and/or failing to respond to requests from the EGI CSIRT team risk site suspension.


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

See relevant OS providers.

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

More information is available from RedHat [R 1]

This advisory will be updated when patches become available for more different 

operating systems.

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

Sites running Debian should see [R 2] 

Sites running Ubuntu should see [R 3]

Sites running RedHat should see [R 4]  (patch not available at time of writing)

Sites running Scientific Linux (SL) should see [R 5] (patch not available at time of writing)


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-2016-5195    

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

Credit
======

SVG was alerted to this vulnerability by Daniel Kouril who is a member of SVG

References
==========

[R 1] https://bugzilla.redhat.com/show_bug.cgi?id=1384344

[R 2] https://security-tracker.debian.org/tracker/CVE-2016-5195

[R 3] http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-5195.html

[R 4] https://access.redhat.com/security/cve/CVE-2016-5195

[R 5] https://www.scientificlinux.org/

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.  

Timeline  
========
Yyyy-mm-dd  [EGI-SVG-CVE-2016-5195] 

2016-10-20  SVG alerted to this issue by Daniel Kouril 
2016-10-20 Investigation of vulnerability and relevance to EGI carried out
2016-10-20 EGI SVG Risk Assessment completed
2016-10-20 IRTF/SVG agreed to issue an urgent heads up.
2016-10-20 'Heads up' sent to sites

On behalf of the EGI SVG,