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AUSCERT External Security Bulletin Redistribution
ESB-2014.0201
A vulnerability has been identified in IBM Security Access
Manager for Web and IBM Tivoli Access Manager
17 February 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Security Access Manager for Web
IBM Tivoli Access Manager
Publisher: IBM
Operating System: Network Appliance
AIX
HP-UX
Linux variants
Solaris
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2013-6747
Reference: ESB-2014.0113
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21664756
http://www-01.ibm.com/support/docview.wss?uid=swg21664755
Comment: This bulletin contains two (2) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: IBM GSKit Certificate Chain Vulnerability in IBM Security
Access Manager for Web Gateway Appliance (CVE-2013-6747) Flash (Alert)
Document information
More support for:
IBM Security Access Manager for Web
Software version:
7.0
Operating system(s):
All Platforms
Reference #:
1664756
Modified date:
2014-02-14
Abstract
A specially constructed certificate could cause IBM Security Access Manager
for Web Gateway Appliance to stop responding or crash.
Content
VULNERABILITY DETAILS:
CVEID:
CVE-2013-6747
DESCRIPTION:
IBM Security Access Manager for Web Gateway Appliance uses digital
certificates to verify the identity of client and server components. If a
compromised client or server presents a specially constructed certificate, it
could cause IBM Security Access Manager for Web Gateway Appliance to use
excessive resources processing the certificate. This could cause the process
to become unresponsive or crash. The attack does not require local network
access nor does it require authentication, but some degree of specialized
knowledge and techniques are required. An exploit would not impact the
confidentiality of information or the integrity of data, but the availability
of the system could be compromised.
CVSS:
CVSS Base Score: 7.1
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/89863
CVSS Environmental Score*: Undefined
CVSS Vector: (AV/N:AC/M:Au/N:C/N:I/N:A/C)
AFFECTED PRODUCTS AND VERSIONS:
IBM Security Access Manager Web Gateway Appliance version 7.0
REMEDIATION:
The following versions of GSKit contain the fix for this issue:
* GSKit version 8.0.50.16 or higher
How to obtain the patched GSKit versions:
1. Download the FixPack or iFix listed in the Vendor Fixes table below that
matches your installed IBM Security Access Manager Gateway Appliance (ISAM
WGA) version.
2. Follow the instructions in the README to obtain and apply the appropriate
GSKit fix for your product version.
Vendor Fix(es):
ISAM WGA Version GSKit Version Interim Fix
ISAM WGA 7.0 GSKit v8 7.0.0-ISS-WGA-IF0004
Workaround(s):
None
Mitigation(s):
None
REFERENCES:
* Complete CVSS Guide
* On-line Calculator V2
* CVE-2013-6747
* http://xforce.iss.net/xforce/xfdb/89863
* IBM Security Alerts
RELATED INFORMATION:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
CHANGE HISTORY:
* 14 February 2014 - initial publication
*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.
- -------------------------------------------------------------------------------
Security Bulletin: IBM GSKit Certificate Chain Vulnerability in Tivoli Access
Manager and IBM Security Access Manager for Web (CVE-2013-6747)
Flash (Alert)
Document information
More support for:
IBM Security Access Manager for Web
Software version:
5.1, 6.0, 6.1, 6.1.1, 7.0
Operating system(s):
All Platforms
Reference #:
1664755
Modified date:
2014-02-14
Abstract
A specially constructed certificate could cause Tivoli Access Manager and IBM
Security Access Manager for Web to stop responding or crash.
Content
VULNERABILITY DETAILS:
CVEID:
CVE-2013-6747
DESCRIPTION:
Tivoli Access Manager and IBM Security Access Manager for Web use digital
certificates to verify the identity of client and server components. If a
compromised client or server presents a specially constructed certificate, it
could cause the Tivoli Access Manager or IBM Security Access Manager for Web
process to use excessive resources processing the certificate. This could
cause the process to become unresponsive or crash. The attack does not require
local network access nor does it require authentication, but some degree of
specialized knowledge and techniques are required. An exploit would not impact
the confidentiality of information or the integrity of data, but the
availability of the system could be compromised.
CVSS:
CVSS Base Score: 7.1
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/89863
CVSS Environmental Score*: Undefined
CVSS Vector: (AV/N:AC/M:Au/N:C/N:I/N:A/C)
AFFECTED PRODUCTS AND VERSIONS:
Tivoli Access Manager version 5.1 (out of service)
Tivoli Access Manager versions 6.0, 6.1, 6.1.1
IBM Security Access Manager for Web version 7.0
REMEDIATION:
Customers using Tivoli Access Manager version 5.1 should upgrade to a
supported version of the product.
The following versions of GSKit contain the fix for this issue: * GSKit
version 7.0.4.48 or higher
How to obtain the patched GSKit versions for supported TAM versions:
1. Download the FixPack or iFix listed in the Vendor Fixes table below that
matches your installed Tivoli Access Manager (TAM) and IBM Security Access
Manager for Web (ISAM for Web) version.
2. Follow the instructions in the README to obtain and apply the appropriate
GSKit fix for your product version.
Vendor Fix(es):
TAM/ISAM Version GSKit Version Interim Fix
TAM for e-business 6.0 GSKit v7 6.0.0-ISS-TAM-IF0032
TAM for e-business 6.1 GSKit v7 6.1.0-ISS-TAM-IF0013
TAM for e-business 6.1.1 GSKit v7 6.1.1-ISS-TAM-IF0009
ISAM for Web 7.0 GSKit v8 7.0.0-ISS-WGA-IF0004
Workaround(s):
None
Mitigation(s):
None
REFERENCES:
* Complete CVSS Guide
* On-line Calculator V2
* CVE-2013-6747
* http://xforce.iss.net/xforce/xfdb/89863
* IBM Security Alerts
RELATED INFORMATION:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
CHANGE HISTORY:
* 14 February 2014 - initial publication
*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.
- --------------------------END INCLUDED TEXT--------------------
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