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Ticketbleed vulnerability affects some f5 appliances

Published: 2017-02-09
Last Updated: 2017-02-09 06:30:43 UTC
by Brad Duncan (Version: 1)
1 comment(s)

Early today on 2017-02-09, a new vulnerability based on CVE-2016-9244 was announced by f5 affecting the company's Big-IP appliances [1].  According to f5:

A BIG-IP SSL virtual server with the non-default Session Tickets option enabled may leak up to 31 bytes of uninitialized memory.

This new vulnerability has a website ( and a logo.  It even has an article on The Register as I write this [2].

Shown above:  A creative logo for yet another vulnerability. (currently redirects to has interesting details about the discovery and timeline.  It also has a link for a complete technical walkthrough on the vulnerability.

At this point, organizations using f5 products will start spinning up their security teams to determine if they are impacted.  As I write this, It's shortly after midnight in the US Central Time Zone.  Later as the business day begins, leadership in many organizations will be asking about Ticketbleed.  Some will find echoes of 2014's Heartbleed vulnerability in this.  As I just heard from a fellow security professional, "There goes my tomorrow."

Brad Duncan
brad [at]



Keywords: Ticketbleed
1 comment(s)
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