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AUSCERT External Security Bulletin Redistribution
ESB-2013.0672
Security Bulletin: IBM InfoSphere Information Server:
Possible session fixation vulnerability (CVE-2013-0507)
14 May 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM InfoSphere Information
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
Impact/Access: Unauthorised Access -- Remote with User Interaction
Resolution: Patch/Upgrade
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21637036
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Security Bulletin: IBM InfoSphere Information Server: Possible session fixation
vulnerability (CVE-2013-0507)
Flash (Alert)
Document information
InfoSphere Information Server
Software version:
8.1, 8.5, 8.7, 9.1
Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows
Reference #:
1637036
Modified date:
2013-05-10
Abstract
Security Bulletin: IBM InfoSphere Information Server: Possible session fixation
vulnerability (CVE-2013-0507)
Content
SUMMARY:
Information Server does not update the session identifier after a successful
authentication. This can lead to session fixation attacks. An attacker could
exploit this vulnerability to gain unauthorized access to the application by
acting as the session created by a regular user.
VULNERABILITY DETAILS:
CVE ID: CVE-2013-0507
CVSS:
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/82397 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
AFFECTED PRODUCTS:
IBM InfoSphere Information Server Versions 8.1, 8.5, and 8.7 running on all
platforms.
IBM InfoSphere Information Server Version 9.1 is vulnerable on all platforms
only when running on WebSphere Application Server version 7.0.
REMEDIATION:
The recommended solution is to apply the fix as soon as practical. Please see
below for additional information.
Fix(es):
Important! After applying the fixes below, or if no fixes are required,
security scanning tools may still report this as a vulnerability; however, if
all settings were applied correctly the vulnerability is addressed and is not
a concern.
Versions 8.0 and 8.1: Please contact IBM Support for information.
Versions 8.5, 8.7 and 9.1: For version 8.5 you must upgrade to WebSphere
Application Server 7.0 and enable security integration in the WebSphere
Application Server session management settings. Please contact IBM Support for
assistance with the upgrade. For versions 8.7 or 9.1, if WebSphere Application
Server 8.0 or 8.5 is used no issue exists. If WebSphere Application Server 7.0
is used, you must enable security integration in the WebSphere Application
Server session management settings.
To enable security integration:
Login to the WebSphere Administration Integrated Solutions Console
Click Security > Global security
Expand Web and SIP security and select General settings
The "Authenticate only when the URI is protected" radio button should be
selected
Check "Use available authentication data when an unprotected URI is
accessed"
Click Apply
Click Servers > Server Types > WebSphere application servers
Click the server name (for clustered configuration you must repeat this for
each application server in the cluster)
Click Session management
Check Security Integration
Click Apply
Save the changes and restart the application server (for clustered
configurations, you must update and save this setting for every
application server in the cluster and then restart the cluster)
For further details refer to: HTTP session management settings.
Workaround(s):
None known.
Mitigation(s):
None known.
REFERENCES:
· Complete CVSS Guide
· On-line Calculator V2
· X-Force Vulnerability Database
· CVE-2013-0507
RELATED INFORMATION:
· IBM Secure Engineering Web Portal
· IBM Product Security Incident Response Blog
CHANGE HISTORY:
· 10-May-2013: 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 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
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