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AUSCERT External Security Bulletin Redistribution
ESB-2016.2043
Security Bulletin: IBM Spectrum Scale and IBM GPFS are affected by security
vulnerabilities (CVE-2016-2985 and CVE-2016-2984)
26 August 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Spectrum Scale
IBM GPFS
Publisher: IBM
Operating System: AIX
Linux variants
Windows
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-2985 CVE-2016-2984
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=ssg1S1007994
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Security Bulletin: IBM Spectrum Scale and IBM GPFS are affected by security
vulnerabilities (CVE-2016-2985 and CVE-2016-2984)
Security Bulletin
Document information
More support for: IBM Spectrum Scale
Software version: 4.1.1, 4.2.0
Operating system(s): AIX, Linux, Windows
Reference #: S1007994
Summary
Security vulnerabilities have been identified in all levels of IBM Spectrum
Scale and IBM GPFS that could allow:
- - a local attacker to execute commands as root by setting environment
variables processed by setuid programs (CVE-2016-2985)
- - a local attacker to execute commands as root by supplying command line
parameters to setuid programs (CVE-2016-2984)
Vulnerability Details
CVEID: CVE-2016-2985
DESCRIPTION: A security vulnerability has been identified in IBM Spectrum
Scale and IBM GPFS that could allow a local attacker to execute commands as
root by setting environment variables processed by setuid programs.
CVSS Base Score: 7.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/114001 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2016-2984
DESCRIPTION: A security vulnerability has been identified in IBM Spectrum
Scale and IBM GPFS that could allow a local attacker to execute commands as
root by supplying command line parameters to setuid programs.
CVSS Base Score: 7.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/114000 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM Spectrum Scale V4.2.0.0 thru V4.2.0.3
IBM Spectrum Scale V4.1.1.0 thru V4.1.1.7
IBM GPFS V4.1.0.0 thru V4.1.0.8
IBM GPFS V3.5.0.0 thru V3.5.0.31
All older IBM GPFS versions no longer in service
Remediation/Fixes
For IBM Spectrum Scale V4.2.0.0 thru V4.2.0.3, apply IBM Spectrum Scale
V4.2.0.4 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 4.1.1.7 and IBM GPFS V4.1.0.0 thru
V4.1.0.8, apply V4.1.1.8 at
http://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 V3.5.0.31, apply V3.5.0.32 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
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References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
4 August 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.
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