full-disclosure - Re: Ubuntu: reseed(8), random.org, and HTTP request

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Message-ID: <CAJVRA1S680vPnwRcK-8GAs4Gs5yeER4-Er5y9U4W2UP=iwVAbg@mail.gmail.com>
Date: Wed, 6 Jul 2011 00:23:49 -0700
From: coderman <coderman@...il.com>
To: noloader@...il.com
Cc: Full Disclosure <full-disclosure@...ts.grok.org.uk>,
	BugTraq <bugtraq@...urityfocus.com>
Subject: Re: Ubuntu: reseed(8), random.org,
	and HTTP request

On Tue, Jul 5, 2011 at 9:04 PM, Jeffrey Walton <noloader@...il.com> wrote:
> Ubuntu's reseed(8) can be used to seed the PRNG state of a host. The
> script is run when the package installed, and anytime su executes the
> script.

... someone thought this was a good idea.
 [an entropy pool remotely biased by MitM attacker, maybe?]

> reseed(8) performs a unsecured HTTP request to random.org for its
> bits, despite random.org offering HTTPS services.

https doesn't help if your host entropy pool is poorly seeded.
 [SSL/TLS needs entropy for authenticity/privacy.]

> The Ubuntu Security Team took no interest when contacted by email (no
> reply); the point of contact listed in the man pages took no interest
> when contacted by email (no reply); and a launcher bug report was not
> acted upon (https://bugs.launchpad.net/ubuntu/+source/reseed/+bug/804594).

you're surprised?
 [you must be new around here!]

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