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Security Bulletin: Vulnerability in SSLv3 affects IBM Virtualization Engine TS7700 (CVE-2014-3566)

Security Bulletin


Summary

SSLv3 contains a vulnerability that has been referred to as the Padding Oracle On Downgraded Legacy Encryption (POODLE) attack. SSLv3 is enabled in IBM Virtualization Engine TS7700.

Vulnerability Details


CVE-ID: CVE-2014-3566

DESCRIPTION: Product could allow a remote attacker to obtain sensitive information, caused by a design error when using the SSLv3 protocol. A remote user with the ability to conduct a man-in-the-middle attack could exploit this vulnerability via a POODLE (Padding Oracle On Downgraded Legacy Encryption) attack to decrypt SSL sessions and access the plaintext of encrypted connections.

CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/97013 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

All

Remediation/Fixes

For all TS7700 microcode levels greater than or equal to 8.21.0.63, contact IBM Service at 1-800-IBM-SERV to arrange for the application of VTD_EXEC.202 to remove SSLv3 support in the TS7700.

For microcode levels prior to 8.21.0.63, contact IBM Service at 1-800-IBM-SERV to arrange for an upgrade to level 8.21.0.63 or higher and the application of VTD_EXEC.202.

Workarounds and Mitigations

Disable support in all web browsers used to access the TS7700 Management Interface:

Mozilla Firefox

Either

    1. Install the Mozilla add-on called "SSL Version Control"
Or
    1. Type about:config into the navigation bar and press [Enter]
    2. Accept the warning and proceed
    3. Search for tls
    4. Change the value of security.tls.version.min from 0 to 1 (0 = SSL 3.0; 1 = TLS 1.0)

Chrome
    1. Run Chrome with the following command-line flag: --ssl-version-min=tls1

Internet Explorer
    1. Go to Settings -> Internet Options -> Advanced Tab -> Uncheck "Use SSL 3.0" under "Security"

IBM recommends that you review your entire environment to identify areas that enable the SSLv3 protocol and take appropriate mitigation and remediation actions. The most immediate mitigation action that can be taken is disabling SSLv3.

Important note: IBM strongly suggests that all System z customers subscribe to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

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References

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None

Change History

3 December 2014: Information regarding VTD_EXEC.202 added
21 October 2014: 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

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.

Document information

More support for: TS7700 virtual tape systems

Version: Version Independent

Operating system(s): Platform Independent

Software edition: N/A

Reference #: S1004951

Modified date: 03 December 2014


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