Bugtraq mailing list archives
Re: RAS 'save password' problems...
From: mdolphin () POBOX COM (martin Dolphin)
Date: Mon, 23 Mar 1998 14:41:29 -0800
At 12:04 AM 3/23/98 -0500, David LeBlanc wrote: The way to disable this is to use the CachedLogonsCount registry value in the HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon registry key. Default value is 10 if the key doesn't exist. I keep my set at 1 so only the first logon is cached. NT does store the hashes and not clear text. It store these credentials in the HKLM\SECURITY\Policy\Secrets area of the registry as NL$1 to NL$10 and it stores the lanman hash followed by the NT hash followed by 3 bytes of 'status'. (as per Paul Aston's posting to NTBUGTRAQ) I'd bet that these hashes are not syskeyed.
There are also a number of entries corresponding to previous logins by users. There is a way to turn this behavior off, but I don't recall at the moment exactly what it is. Essentially, it is there to allow you to log on if the domain controller can't be reached. I believe it stores hashes rather than clear-text. The RAS functionality can often be annoying as well - it tends to prompt me for my password even when I'm using a script (which of course contains the user-password pair in the clear). Not sure why it thinks it needs it - I just leave it blank, but a less astute user would probably type in their actual password. David LeBlanc |Why would you want to have your desktop user, dleblanc () mindspring com |your mere mortals, messing around with a 32-bit |minicomputer-class computing environment? |Scott McNealy
Current thread:
- RAS 'save password' problems... Aleph One (Mar 20)
- Re: RAS 'save password' problems... David LeBlanc (Mar 22)
- Way to stop /tmp races Pavel Machek (Mar 21)
- Re: RAS 'save password' problems... martin Dolphin (Mar 23)
- buffer overflow with a twist bjorn smedman (Mar 24)
- ncftp 2.4.3 overflow / su killing Michal Zalewski (Mar 24)
- apache+ssl 1.13 symlink problem Ondrej Suchy (Mar 24)
- <Possible follow-ups>
- Re: RAS 'save password' problems... Noam Ben-Yochanan (Mar 22)
- Re: RAS 'save password' problems... martin Dolphin (Mar 22)
- Re: RAS 'save password' problems... David LeBlanc (Mar 22)