Security Bulletin: Vulnerabilities in OpenSSL affect IBM Chassis Management Module (CMM) (CVE-2015-0204)

Summary

OpenSSL vulnerabilities were disclosed on January 8, 2015 by the OpenSSL Project. This includes “FREAK: Factoring Attack on RSA-EXPORT keys” TLS/SSL client and server vulnerability. OpenSSL is used by IBM Chassis Management Module. IBM Chassis ManagementModule has addressed the applicable CVEs.

Vulnerability Details

Summary

OpenSSL vulnerabilities were disclosed on January 8, 2015 by the OpenSSL Project. This includes “FREAK: Factoring Attack on RSA-EXPORT keys” TLS/SSL client and server vulnerability. OpenSSL is used by IBM Chassis Management Module. IBM Chassis Management Module has addressed the applicable CVEs.

Vulnerability Details:

CVE-ID: CVE-2015-0204

Description: A vulnerability in the OpenSSL ssl3_get_key_exchange function could allow a remote attacker to downgrade the security of certain TLS connections. An OpenSSL client accepts the use of an RSA temporary key in a non-export RSA key exchange ciphersuite. This could allow a remote attacker using man-in-the-middle techniques to facilitate brute-force decryption of TLS/SSL traffic between vulnerable clients and servers.

This vulnerability is also known as the FREAK attack.

CVSS Base Score: 4.3
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/99707&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

Affected products and versions

The following versions of IBM Chassis Management Module are affected:

• 2PET10A
• 2PET10B
• 2PET10C
• 2PET10D
• 2PET10E
• 2PET10F
• 2PET10G
• 2PET10H
• 2PET10I
• 2PET10K
• 2PET10M
• 2PET10P
• 2PET10Q
• 2PET12D
• 2PET12E
• 2PEO12E
• 2PET12F
• 2PET12G
• 2PET12H
• 2PET12I
• 2PEO12I
• 2PET12K
• 2PEO12O
• 2PET12O
• 2PETE6L
• 2PET12P
• 2PEO12P
• 2PET12R
• 2PEO12R
• 2PETE5O

Remediation/Fixes:

It is recommended to apply the following update. Firmware updates are available through IBM Fix Central - <http://www.ibm.com/support/fixcentral/&gt; . You should verify applying this fix does not cause any compatibility issues.

IBM Chassis Management Module [CMM] Firmware v2.5.3T [2PET12T]

Workarounds and Mitigations:

To prevent use of export-grade cipher suites in existing CMM versions, disable those cipher suites on any server in your environment that CMM may connect to, such as your LDAP servers (if you are using LDAP for your CMM authentication).

References:

• Complete CVSS Guide
• On-line Calculator V2
• OpenSSL Project vulnerability website
• OpenSSL Advisory on above listed CVEs

Related Information:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None

Change History
05 May 2015: 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 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.