Field Notice: FN - 70590 - Cisco Identity Services Engine - Cisco Feed Service For Posture Updates and Client Provisioning via Transport Layer Security 1.0 Has Been Discontinued - Software Upgrade Recommended

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision	Publish Date	Comments
1.0	06-Aug-20	Initial Release
1.1	10-Aug-20	Updated the Products Affected Section

Products Affected

Affected OS Type	Affected Software Product	Affected Release	Affected Release Number	Comments
NON-IOS	Identity Services Engine System Software	1	1.0, 1.0 MR, 1.1, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.2, 1.2.1, 1.3, 1.4	For ISE 1.X - all versions
NON-IOS	Identity Services Engine System Software	2	2.0, 2.0.1	For ISE 2.0 – all patch versions
NON-IOS	Identity Services Engine System Software	2	2.1.0	For ISE 2.1 – all patch versions
NON-IOS	Identity Services Engine System Software	2	2.2.0	For ISE 2.2 - up to and including Patch 10
NON-IOS	Identity Services Engine System Software	2	2.3.0	For ISE 2.3 – up to and including Patch 5

Defect Information

Defect ID	Headline
CSCvk10081	ISE uses TLS 1.0 when proxy configured and TLS 1.2 if no proxy configured

Problem Description

For the affected Cisco Identity Services Engine (ISE) versions, the Cisco feed service for posture updates and client provisioning via Transport Layer Security (TLS) 1.0 is no longer considered secure and has been discontinued.

Background

When proxy connections are configured, ISE connections to external sites for posture updates and client provisioning that use TLS 1.0 are no longer considered secure. The Cisco feed service headend currently operates with TLS 1.2 for improved security.

Problem Symptom

For the affected ISE versions, proxy connections to external sites for posture updates and client provisioning will fail with an error when TLS 1.0 is used.

The posture updates error displayed on the ISE console is shown in this image.

The client provisioning error displayed on the ISE console is shown in this image.

Workaround/Solution

In order to utilize TLS 1.2 for proxy connections, upgrade the ISE system software to one of these versions:

• ISE 2.2 Patch 12 or later
• ISE 2.3 Patch 6 or later
• ISE 2.4 or later

If an upgrade to the ISE system software is not immediately possible, perform the Cisco ISE Offline Updates process. To do so, see the respective Cisco Identity Services Engine Release Notes document for the ISE version used.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email or telephone

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