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Cisco Wide Area Application Services (WAAS) Software

Field Notice: FN - 63320 - Impact of Microsoft Patch MS10-020 (KB980232) on CIFS Optimization in WAAS

Field Notice: FN - 63320 - Impact of Microsoft Patch MS10-020 (KB980232) on CIFS Optimization in WAAS

May 28, 2010


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 Date Comment
1.2
28-MAY-2010
Updated workaround section.
1.1
26-APR-2010
Updated workaround section.
1.0
23-APR-2010
Initial Public Release

Products Affected

Products Affected Comments
WAAS - WAAS versions 4.0.x, 4.1.x
All hardware platforms 

Problem Description

When using the new Windows patch (KB980232), our testing has shown that the file "save/save as" operation may not be successful when WAAS CIFS optimization is turned on.

Background

Microsoft published a Windows Operating System patch (KB980232) on April 13, 2010 to address some reported vulnerabilities in SMB clients. As part of the patch, Microsoft updated the manner in which the SMB clients handle SMB responses and validate fields within the SMB response. As a result, the patch requires a related update to the WAAS CIFS optimization for compatibility.

Problem Symptoms

When using the new Windows patch, the file save/save-as operation may not be successful when WAAS CIFS optimization is turned on. A pop-up message indicating "There has been a network or file permisson error. The network connection may be lost" is generated by the client.

Workaround/Solution

Workarounds:

For customers running 4.1.X WAAS software, the preferred option is to upgrade to 4.1.7 WAAS Software. 4.1.7 WAAS Software fixes issues related to CIFA AO as well as WAFS legacy mode configuration pertaining to the Microsoft patch.

Customers can also upgrade to 4.1.5f WAAS software if the fix required is ONLY for CIFS AO configuration pertaining to the Microsoft patch.

Customers running 4.0.x who do not wish to migrate to 4.1.x software are recommended to upgrade to version 4.0.27 WAAS software. 4.0.27 WAAS software fixes the CIFS issues related to the WAFS legacy mode configuration pertaining to the Microsoft patch.

Additional details:

Microsoft Patch MS10-020 (KB980232)

WAAS Software can be found here:

http://tools.cisco.com/support/downloads/go/Model.x?mdfid=280484571&mdfLevel=Software%20Family&treeName=Application%20Networking%20Services&modelName=Cisco%20Wide%20Area%20Application%20Services%20%28WAAS%29%20Software&treeMdfId=268437639

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered customer and you must be logged in.

DDTS Description
CSCtg28040 (registered customers only) File Save/Save As Issues After Installing Microsoft Patch (KB980232)

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:

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