IBM Support

Security Bulletin: IBM Spectrum Scale and IBM GPFS are affected by a security vulnerability (CVE-2016-0392)

Security Bulletin


Summary

A security vulnerability has been identified in all levels of IBM Spectrum Scale and IBM GPFS that could allow a local attacker to inject commands into setuid file parameters and execute commands as root.

Vulnerability Details

CVEID: CVE-2016-0392
DESCRIPTION:
IBM General Parallel File System could allow a local attacker to inject commands into setuid file parameters and execute commands as root.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112611 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Spectrum Scale V4.2.0.0 thru V4.2.0.2

IBM Spectrum Scale V4.1.1.0 thru V4.1.1.6

IBM GPFS V4.1.0.0 thru V4.1.0.8

IBM GPFS V3.5.0.0 thru V3.5.0.30

All older IBM GPFS versions no longer in service

Remediation/Fixes

For IBM Spectrum Scale V4.2.0.0 thru V4.2.0.2, apply IBM Spectrum Scale V4.2.0.3 available from Fix Central at
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%2Bdefined%2Bstorage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.2.0&platform=All&function=all


For IBM Spectrum Scale V4.1.1.0 thru 4.1.1.6 and IBM GPFS V4.1.0.0 thru V4.1.0.8, apply V4.1.1.7 athttp://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%2Bdefined%2Bstorage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.1.1&platform=All&function=all

For IBM GPFS V3.5.0.0 thru V3.5.0.30, apply V3.5.0.31 at
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Cluster%2Bsoftware&product=ibm/power/IBM+General+Parallel+File+System&release=3.5.0&platform=All&function=all

For older versions of IBM GPFS, if you have an extended service contract, please contact IBM Service.

Workarounds and Mitigations

Until the fixes can be applied, a workaround is to remove the setuid from the files in the /usr/lpp/mmfs/bin directory. Determine the set of files with setuid bit by running

ls -l /usr/lpp/mmfs/bin | grep r-s

Then reset the setuid bit for each such file by issuing this command on each file

chmod u-s file


Once the workaround is applied, a number of commands may no longer work when not invoked by unprivileged users, including:

mmchfileset
mmcrsnapshot
mmdelsnapshot
mmdf
mmedquota
mmgetacl
mmlsdisk
mmlsfileset
mmlsfs
mmlsmgr
mmlspolicy
mmlspool
mmlsquota
mmlssnapshot
mmputacl
mmsnapdir

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

This vulnerability was reported to IBM by John Fitzpatrick at MWR InfoSecurity

Change History

31 May 2016: Original version published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

[{"Product":{"code":"SSFKCN","label":"General Parallel File System"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Component":"--","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"3.5.0;4.1.0","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
25 June 2021

UID

isg3T1023763