Service Engine crashed due to empty cookie

Products

• VMware Avi Load Balancer

Issue/Introduction

Service Engine failure occurs when a server sends a Set-Cookie header with an empty cookie value for a cookie used by the AppCookie Persistence Profile.

Resolution

SE crash is occurring due to App Cookie Persistence. When client sends traffic with an AppCookie, and the server immediately responds by trying to send an empty AppCookie (in order to expire it):

Set-Cookie: SESSION=; Max-Age=0; Expires=Thu, 1 Jan 1970 00:00:00 GMT; Path=/ui-sa/; HttpOnly; SameSite=Lax

 

Fix Versions:

31.1.1
30.2.1-2p2

Additional Information

This crash will occur only if you upgrade to 30.2.1 or 30.2.1-2p1 and AppCookie Persistence profile is used.