Security Bulletin: Vulnerabilities in 64-bit block ciphers affects IBM License Metric Tool and IBM Tivoli Asset Discovery for Distributed (CVE-2016-2183, CVE-2016-6329)

Summary

The Sweet32 Birthday attack for SSL/TLS connections affects IBM License Metric Tool v7.5 and IBM Tivoli Asset Discovery for Distributed v7.5

Vulnerability Details

CVEID: CVE-2016-2183**
DESCRIPTION:** OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the DES/3DES cipher, used as a part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116337 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2016-6329**
DESCRIPTION:** OpenVPN could allow a remote attacker to obtain sensitive information, caused by an error in the in the Triple-DES on 64-bit block cipher, used as a part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116341 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM License Metric Tool v7.5 IBM Tivoli Asset Discovery for Distributed v7.5

Remediation/Fixes

N/A

Workarounds and Mitigations

Login to WebUI as administrator.

1. On the task panel to the left expand Settingsitem and click WebSphere Administrative Console.
2. Click Launch WebSphere administrative console button in the main panel.
3. Login to WebSphere console.
4. On the task panel to the left expand Security item and clickSSL certificate and key management.
5. In the Related Items group in the main panel clickSSL configurations.
6. For each of the following 3 items (ILMTsecure, ILMTsecure_with_client_auth and NodeDefaultSSLSettings):

• Click item on the list
• In the Additional Properties group click** Quality of protection (QoP) settings**.
• In Cipher suites area, onSelected ciphersgroup select all items containing string “3DES” (you can Control-click to select multiple items) and click**<< Remove** button.
• Click OK button.
• Click Save inMessages pane.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

04 November 2016 : 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 Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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