Security Bulletin: Application not signed properly in IBM Sterling External Authentication Server (CVE-2013-0521)

Abstract

IBM Sterling External Authentication Server is vulnerable to running untrusted code.

Content

VULNERABILITY DETAILS ** ** **CVE ID:******CVE-2013-0521

DESCRIPTION**:Java Webstart App is not signed correctly
The IBM Sterling External Authentication Server Webstart GUI is signed with a self-signed certificate, so browsers do not recognize the authenticity of the application.
**
CVSS:
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/82530 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:P/A:N)

AFFECTED PRODUCTS:

Sterling External Authentication Server 2.4.1
Sterling External Authentication Server 2.4.0
Sterling External Authentication Server 2.3.01
Sterling External Authentication Server 2.2.0

REMEDIATION:

VENDOR FIXES:

IBM Sterling External Authentication Server 2.4.1: Apply Fix Pack 2.4.1.2 Interim Fix 4 (iFix 4)
IBM Sterling External Authentication Server 2.4.0: Apply 2.4.0.4 iFix 2 or Fix Pack 2.4.1.2 iFix 4
IBM Sterling External Authentication Server 2.3.01: Apply 2.3.01.11 iFix 1 or Fix Pack 2.4.1.2 iFix 4
IBM Sterling External Authentication Server 2.2.0: No fix available. Product goes off support 6/30/2013. Customers on releases prior to SEAS 2.3.01 should apply 2.3.01.11 iFix 1 or Fix Pack 2.4.1.2 iFix 4

WORKAROUND(S):
None. Apply Fixes.

MITIGATION(S):
None known.

ADDITIONAL INFORMATION:

The fixes listed above for IBM Sterling Secure Proxy also contains fixes for the following previously reported and fixed vulnerabilities.

REFERENCES:
Complete CVSS Guide
On-line Calculator V2
CVE-2013-0521
X-Force Vulnerability 82530

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

CHANGE HISTORY
21 June 2013 Original Copy 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 FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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