full-disclosure - Attacks based on predictable process IDs??

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Message-ID: <20031127140451.GD4889@zeus.tpfm.de>
From: tomjohn at gmx.de (Thomas Preissler)
Subject: Attacks based on predictable process IDs??

Hello Dirk,

* Dirk schrieb am 27.11.2003:

> On Thursday 27 November 2003 09:26, Wojciech Purczynski wrote:
> 
> > 15 bits of randomness isn't sufficient to prevent guessing its value.
> 
> current linux kernels provide more than 15bit pids ( I think its 30 or 
> 31bits). Not much more, but it makes it slightly more difficult. 

http://www.kniggit.net/wwol26.html, "Scalability Improvements"

...
The number of PIDs (Process IDs) before wraparound has been bumped
up from 32,000 to 1 billion, [...]
...

Greets,
Tom