Full Disclosure mailing list archives
Re: Ubuntu 11.10 now unsecure by default
From: 夜神 岩男 <supergiantpotato () yahoo co jp>
Date: Sun, 20 Nov 2011 04:12:45 +0900
On 11/18/2011 11:33 PM, Valdis.Kletnieks () vt edu wrote:
On Fri, 18 Nov 2011 06:10:00 PST, Dan Kaminsky said:OK, seriously. If you're sitting in front of a machine that's presenting you a login prompt, you've got enough privileges to insert a bootable USB/CD and pull all the data / make yourself an account (FDE/Bios PW notwithstanding).Right. Which is why a passwordless guest account available to people who have physical access isn't such a big deal. The problem is that if you manage to get ssh enabled, there's not *that* much stopping the account from being used from Zanzibar. Some operating systems (AIX, for instance) allowed tagging a userid as "local access only", or even "may only login on tty 3, 5, and 23". Adding that sort of a tag to the guest account would help the situation by adding some security in depth.
Not saying this train of thought itself is safe, but... we've needed a singleuser mode (by whatever name) as a failsafe since ages forgotten. That being said, I don't know what is necessary about a default guest account -- those who really need physical access, passwordless guest accounts tend to know how to set them up. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Re: Ubuntu 11.10 now unsecure by default, (continued)
- Re: Ubuntu 11.10 now unsecure by default Leon Kaiser (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Dan Ballance (Nov 20)
- Re: Ubuntu 11.10 now unsecure by default xD 0x41 (Nov 20)
- Re: Ubuntu 11.10 now unsecure by default xD 0x41 (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Leon Kaiser (Nov 19)
- Re: Ubuntu 11.10 now unsecure by default C de-Avillez (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Valdis . Kletnieks (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Dan Kaminsky (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Darren Martyn (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Valdis . Kletnieks (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default 夜神 岩男 (Nov 19)
- Re: Ubuntu 11.10 now unsecure by default Charles Morris (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Olivier (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default GloW - XD (Nov 18)
- Re: Ubuntu 11.10 now unsecure by default Valdis . Kletnieks (Nov 20)
- Re: Ubuntu 11.10 now unsecure by default Jason A. Donenfeld (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Darren Martyn (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Benji (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Darren Martyn (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Valdis . Kletnieks (Nov 21)
- Re: Ubuntu 11.10 now unsecure by default Darren Martyn (Nov 21)