Security Bulletin: Privilege escalation attacks possible due to improper file ownership/permissions in IBM InfoSphere Information Server (CVE-2012-5938).

Security Bulletin: Privilege escalation attacks possible due to improper file ownership/permissions in IBM InfoSphere Information Server (CVE-2012-5938).

VULNERABILITY DETAILS:
CVE ID: CVE-2012-5938

DESCRIPTION: IBM InfoSphere Information Server installation creates files with inadequate permission restrictions that can lead to privilege escalation attacks.

CVSS:
CVSS Base Score: 7.2
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/80493 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C)

AFFECTED PRODUCTS:
IBM InfoSphere Information Server Versions 8.1, 8.5, 8.7 and 9.1 running on all Linux/Unix platforms.

REMEDIATION:
The recommended solution is to apply the fix as soon as practical. Please see below for information on the fixes available.

Fix:
Version 8.1:
--Contact IBM Information Server Support for information

Versions 8.5:
--Apply the IBM InfoSphere Information Server 8.5 Installer Security Patch

Version 8.7:
--Apply the IBM InfoSphere Information Server 8.7 Installer Security Patch

Version 9.1
--Apply IBM InfoSphere Information Server Version 9.1 Fix Pack 1

Workaround(s):
None known.

Mitigation:
None known.

REFERENCES:
· Complete CVSS Guide
· On-line Calculator V2
· X-Force Vulnerability Database http://xforce.iss.net/xforce/xfdb/80493
· CVE-2012-5938


RELATED INFORMATION:
· IBM Secure Engineering Web Portal
· IBM Product Security Incident Response Blog

ACKNOWLEDGEMENT:

CHANGE HISTORY:
· 15 March 2013: Original copy
· 20 March 2013: Update Patch Name to reflect Installer
· 29 Apr 2013: Update fix for IIS Version 9.1

*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 Flash.

Note: 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.