Security Bulletin: Vulnerability in SSLv3 affects certain IBM System Networking products running certain levels of firmware (CVE-2014-3566)

Summary

SSLv3 contains a vulnerability that has been referred to as the Padding Oracle On Downgraded Legacy Encryption (POODLE) attack. SSLv3 is enabled in the IBM System Networking products identified below in the Affected Products and Versions section of thisbulletin.

Vulnerability Details

Abstract

SSLv3 contains a vulnerability that has been referred to as the Padding Oracle On Downgraded Legacy Encryption (POODLE) attack. SSLv3 is enabled in the IBM System Networking products identified below in the Affected Products and Versions section of this bulletin.

Content

Vulnerability Details:

CVE-ID: CVE-2014-3566

Description: Networking devices could allow a remote attacker to obtain sensitive information caused by a design error when using the SSLv3 protocol. A remote user could conduct a man-in-the-middle attack and exploit the POODLE vulnerability 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&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

Affected products and versions

For all the System Networking Products listed below, all firmware versions prior to the versions listed below are affected by this vulnerability.

Systems running older versions of the code need to upgrade to latest firmware versions or take the steps outlined in remediation to remove this vulnerability.

Remediation/Fixes:

If you are running any firmware version of these products that is affected, you should update firmware to the version of firmware for your product that has the fix as listed below.

SSL has been disabled in all of the versions with the fix listed immediately above.

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. You should verify that disabling SSLv3 does not cause any compatibility issues.

Workaround(s) & Mitigation(s):

For certain older versions of products listed in the table below, a cli command is available to set a minimum version of SSL, thus providing the option to disable the SSLv3 version on the server side. Details on the products and firmware versions for which this mitigation is available in the table below, with instructions on disabling SSLv3 in these versions below the table:

ssl minimum-version <ssl3 | tls10 | tls11 | tls12>
Router(config)#ssl minimum-version ?
ssl3 SSLv3
tls10 TLS 1.0
tls11 TLS 1.1
tls12 TLS 1.2

Setting the minimum SSL version to any value other than SSLv3 disables SSL 3.0 (and any other protocol version older than the version specified when the command is run).

References:

• Complete CVSS Guide
• On-line Calculator V2

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

None

Change History
12 November 2014: 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 Flash.

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.