Security Bulletin: Vulnerability in SSLv3 affects IBM System Storage Tape Controller 3592 Model C07 (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 System Storage Tape Controller 3592 Model C07.

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

Contact your System Services Representative to arrange for an upgrade to Enterprise Tape Controller microcode level 1.25.3.20 or higher.

Workarounds and Mitigations

Disable support in all web browsers used to access the IBM Storage Subsystem Tape Controller 3592 C07 Management Interface:

Mozilla Firefox

Either

Install the Mozilla add-on called "SSL Version Control"

Type about:config into the navigation bar and press [Enter]
Accept the warning and proceed
Search for tls
Change the value of security.tls.version.min from 0 to 1 (0 = SSL 3.0; 1 = TLS 1.0)

Chrome

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

Internet Explorer

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

Complete CVSS v2 Guide
On-line Calculator v2

Off

Change History

7 November 2014: Original Version Published
2 February 2015: Fix information added

*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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Tips

Security Bulletin: Vulnerability in SSLv3 affects IBM System Storage Tape Controller 3592 Model C07 (CVE-2014-3566)