Full Disclosure mailing list archives
Re: Ubuntu: reseed(8), random.org, and HTTP request
From: Jeffrey Walton <noloader () gmail com>
Date: Wed, 6 Jul 2011 06:53:31 -0400
On Wed, Jul 6, 2011 at 6:36 AM, Jonathan Le Vigouroux <jonathan.levigouroux () gmail com> wrote:
Can you develop a bit about the:you're surprised? [you must be new around here!]I'm new here, and I'd like the reason(s) why you said that. I don't mean to start a useless and finger-pointing debate, I just wanna be put up to speed, that's all.
No flame war - coderman has some experience dealing with security and cert teams. After some time, you'll see some of the more memorable responses (other than no acknowledgement/no response). In the meantime, check out the "Lamest Vendor Response" from the Pwnie Awards: http://www.pwnies.com/. Jeff
On Wed, Jul 6, 2011 at 9:44 AM, Jeffrey Walton <noloader () gmail com> wrote:On Wed, Jul 6, 2011 at 3:23 AM, coderman <coderman () gmail com> wrote:On Tue, Jul 5, 2011 at 9:04 PM, Jeffrey Walton <noloader () gmail 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?Hardly - listed for completeness.[you must be new around here!]
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Current thread:
- Ubuntu: reseed(8), random.org, and HTTP request Jeffrey Walton (Jul 05)
- Re: Ubuntu: reseed(8), random.org, and HTTP request coderman (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Jeffrey Walton (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Jonathan Le Vigouroux (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Jeffrey Walton (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Jeffrey Walton (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request coderman (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Jamie Strandboge (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Michal Zalewski (Jul 06)
- Re: Ubuntu: reseed(8), random.org, and HTTP request Michal Zalewski (Jul 06)