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AUSCERT External Security Bulletin Redistribution
ESB-2015.2207
Security Bulletin: Vulnerabilities in OpenSSL including Logjam affect IBM
Security Directory Server (CVE-2015-4000)
24 August 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Security Directory Server
Publisher: IBM
Operating System: AIX
Red Hat
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-4000
Reference: ESB-2015.1463
ESB-2015.1455.2
ESB-2015.1454.2
ESB-2015.1453.2
ESB-2015.1452
ESB-2015.1445
ESB-2015.1443
ESB-2015.1432
ESB-2015.1425
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21964929
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Security Bulletin: Vulnerabilities in OpenSSL including Logjam affect IBM
Security Directory Server (CVE-2015-4000)
Security Bulletin
Document information
More support for:
IBM Security Directory Server
Software version:
6.1, 6.2, 6.3, 6.3.1, 6.4
Operating system(s):
Platform Independent
Reference #:
1964929
Modified date:
2015-08-21
Summary
OpenSSL vulnerabilities were disclosed on June 11, 2015 by the OpenSSL Project.
This includes Logjam Attack on TLS connections using the Diffie-Hellman (DH)
key exchange protocol (CVE-2015-4000). OpenSSL is used by IBM Security
Directory Server. IBM Security Directory Server has addressed the applicable
CVEs.
Vulnerability Details
CVEID: CVE-2015-4000
DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive
information, caused by the failure to properly convey a DHE_EXPORT ciphersuite
choice. An attacker could exploit this vulnerability using man-in-the-middle
techniques to force a downgrade to 512-bit export-grade cipher. Successful
exploitation could allow an attacker to recover the session key as well as
modify the contents of the traffic. This vulnerability is commonly referred to
as "Logjam".
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Tivoli Directory Server 6.1, 6.2, 6.3
IBM Security Directory Server 6.3.1, 6.4
Remediation/Fixes
Product VRMF Remediation/Fix
IBM Tivoli Directory Server 6.1 IBM Tivoli Directory Server 6.1 iFix 69
IBM Tivoli Directory Server 6.2 IBM Tivoli Directory Server 6.2 iFix 45
IBM Tivoli Directory Server 6.3 IBM Tivoli Directory Server 6.3 iFix 38
IBM Security Directory Server 6.3.1 IBM Security Directory Server 6.3.1 iFix 12
IBM Security Directory Server 6.4 IBM Security Directory Server 6.4.0 iFix 3
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References
Complete CVSS v2 Guide
On-line Calculator v2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*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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