Full Disclosure mailing list archives
Re: Re: Full-Disclosure Digest, Vol 17, Issue 31
From: "Eliah Kagan" <degeneracypressure () gmail com>
Date: Thu, 27 Jul 2006 15:50:38 -0800
On 7/17/06, Vidar Løkken wrote:
On Sun, 16 Jul 2006, Jhou Shalnevarkno wrote: > I've come to the realisation that plain text can be entered to change > the root password in Slackware Linux. It doesn't check for the > original password.. Surely this isn't right, perhaps its my bit of > confusion but I think that its a minor case of stupidity that even > though the root user has rwx access to all filesystems, this shouldn't > be the case with passwords. Root can always change a password for a user or himself without knowledge of the old password. It has always been so, in any Linux and BSD I know of. And it is so by design, since a root console should not be left logged in anyway. And those who are root, can just edit the files, so what is the point in asking for the former password? It adds nothing in security...
Yes, root can, by definition, make any change to the state of the system. Otherwise it wouldn't be root. If you changed the passwd executable so that even root would have to enter a password, the only impact on security would be that there would be another avenue for a shoulder-surfing attack. A person logged in as root can, as Vidar said, just manually change the contents of the shadow password file. Or bring in a copy of the (current) passwd executable that lets root change passwords without entering the root password, and run that... Thus there would be no security benefit to making the suggested change. -Eliah _______________________________________________ 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: Full-Disclosure Digest, Vol 17, Issue 31 Jhou Shalnevarkno (Jul 16)
- Re: Re: Full-Disclosure Digest, Vol 17, Issue 31 Vidar Løkken (Jul 17)
- Re: Re: Full-Disclosure Digest, Vol 17, Issue 31 Eliah Kagan (Jul 27)
- Re: Re: Full-Disclosure Digest, Vol 17, Issue 31 Vidar Løkken (Jul 17)