Re: yet another OpenSSH timing leak?

2006-10-15 Thread Marco Ivaldi
Hey Bugtraq, I'm re-sending this to the list, 'cause for some reason my previous email didn't go through... Here's further information about the OpenSSH timing leak i recently found on SUSE systems, plus some news and considerations about possible solutions. First of all, i finally managed t

Re: yet another OpenSSH timing leak?

2006-10-10 Thread Marco Ivaldi
Hey again, I know quoting myself is bad form, but i just wanted to clarify a few points about my recent OpenSSH timing leak post;) Here we are again... During a recent penetration test i stumbled upon yet another OpenSSH timing leak, leading to remote disclosure of valid usernames. It'

Re: yet another OpenSSH timing leak?

2006-10-10 Thread Gianluca Varisco
Marco Ivaldi wrote: It needs expect, and target ssh hostkey must be already added. I'd be very interested in knowing the results of tests performed on other distros and configurations. Hi Marco, nice to meet you :-). I tried to do this test over my 10 Mbps lan and this is the result: [EM

yet another OpenSSH timing leak?

2006-10-09 Thread Marco Ivaldi
Hello Bugtraq, Here we are again... During a recent penetration test i stumbled upon yet another OpenSSH timing leak, leading to remote disclosure of valid usernames. It's not as big as the one i found in the past (CVE-2003-0190), but it can indeed be exploited over the Internet, neverth