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AUSCERT External Security Bulletin Redistribution
ESB-2016.2421
Security Bulletin: IBM PowerVC - Local escalation of
privilege vulnerability in DB2 for Linux (CVE-2016-5995)
14 October 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM PowerVC Standard Edition
Publisher: IBM
Operating System: Linux variants
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-5995
Reference: ESB-2016.2200
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=nas8N1021652
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Security Bulletin: IBM PowerVC - Local escalation of privilege vulnerability
in DB2 for Linux (CVE-2016-5995)
Document information
More support for: PowerVC Standard Edition
Software version: 1.2.3, 1.3.0
Operating system(s): Linux
Software edition: Standard
Reference #: N1021652
Modified date: 2016-10-12
Security Bulletin
Summary
IBM PowerVC is impacted by Local escalation of privilege vulnerability in
DB2 for Linux (CVE-2016-5995)
Vulnerability Details
CVE-ID: CVE-2016-5995
Description: DB2 for Linux, Unix and Windows is vulnerable to a privilege
escalation due to code being built with binaries with libraries in insecure
locations. A local user could place a malicious library in a location that
a SETGID or SETUID binary would execute and gain root level access.
CVSS Base Score: 8.40
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116653 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
PowerVC Standard Edition 1.2.3.0 through 1.2.3.3
PowerVC Standard Edition 1.3.0.0 through 1.3.0.2
Remediation/Fixes
For PowerVC 1.2.3, update to 1.2.3 FP3 and
then apply the IT17260 interim fix from
FixCentral:https://www-945.ibm.com/support/fixcentral/swg/selectFixes?product=ibm%2FOther+software%2FPowerVC&fixids=Security-Fix-1.2.3.3-PowerVC-RHEL-NOARCH-APAR-IT17260&source=SAR&function=fixId&parent=ibm/Other%20software
For PowerVC 1.3.0, update to 1.3.0 FP2 and
then apply the IT17260 interim fix from
FixCentral:https://www-945.ibm.com/support/fixcentral/swg/selectFixes?product=ibm%2FOther+software%2FPowerVC&fixids=Security-Fix-1.3.0.2-PowerVC-RHEL-NOARCH-APAR-IT17260&source=SAR&function=fixId&parent=ibm/Other%20software.
Workarounds and Mitigations
Running the following commands will remove the vulnerability without
side-effects. The user executing the commands must be root.
/home/pwrvcdb/sqllib/bin/db2chglibpath -s '\.:' -r ''
/home/pwrvcdb/sqllib/adm/db2iclean
/opt/ibm/powervc/db/bin/db2chglibpath -s '\.:' -r ''
/opt/ibm/powervc/db/adm/db2iclean
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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
Acknowledgement
None
Change History
12 October 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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