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ESA-2016-157: EMC ScaleIO Multiple Vulnerabilities

EMC Identifier: ESA-2016-157
CVE Identifier: CVE-2016-9867, CVE-2016-9868, CVE-2016-9869
Severity Rating: CVSS v3Base Score: See below for individual scores

Affected products:  
EMC ScaleIO versions before 2.0.1.1 

Summary:  
EMC ScaleIO version 2.0.1.1 contains fixes for multiple security vulnerabilities that could potentially be exploited by malicious users to compromise the affected system. 

Details:  
EMC ScaleIO versions before 2.0.1.1 could be vulnerable to the following vulnerabilities:

  Privilege escalation  vulnerability (CVE-2016-9867)
A low-privileged local attacker may be able to modify the kernel memory in the SCINI driver and may achieve code execution to escalate privileges to root on ScaleIO Data Client (SDC) servers.
CVSSv3: 7.8 (AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

  Denial-of-service vulnerability via IOCTL calls (CVE-2016-9868)
A low-privileged local attacker may cause a denial-of-service by generating a kernel panic in the SCINI driver using IOCTL calls which may render the ScaleIO Data Client (SDC) server unavailable until the next reboot.
CVSSv3: 4.7 (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
 
  Denial-of-service through configuration API (CVE-2016-9869)
Incorrect permissions on the SCINI driver may allow a low-privileged local attacker to modify the configuration and render the ScaleIO Data Client (SDC) server unavailable.
CVSSv3: 4.7 (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
 
Resolution:  
The following EMC ScaleIO release contains resolutions to these vulnerabilities:
  EMC ScaleIO version 2.0.1.1

EMC recommends all customers upgrade at the earliest opportunity. For those that are unable to upgrade we recommend customers to change the access permission to 600 as follows:

  For each SDC, please execute the following SHELL command:
chmod 600 /dev/scini 
            
              Notes: 
1.  This should be executed as-is (do not add anything else to the command).
2.  This command should be executed after every reload of the SDC or after reboot 
3.  Once upgraded to 2.0.1.1. it is all set and no need to use this workaround.

Link to remedies:
Customers can download software from https://support.emc.com/products/33925_ScaleIO  

For those customers who are on versions prior to EMC ScaleIO 1.32.6 please contact ScaleIO Customer Support.
 
Credit: 
EMC would like to thank David BERARD, from the Ubisoft Security & Risk Management team, for reporting these vulnerabilities.


[The following is standard text included in all security advisories.  Please do not change or delete.]

Read and use the information in this EMC Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact EMC Software Technical Support at 1-877-534-2867.

For an explanation of Severity Ratings, refer to EMC Knowledgebase solution emc218831. EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.



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