Security Basics mailing list archives
Re: Reseting root password Was: user name from security logs
From: Steven McIntosh <s.mcintosh () compserv gla ac uk>
Date: Thu, 02 Jun 2005 12:53:04 +0100
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Like wise, remove the "x", which references the shadow file, from the root entry in the passwd file and hey presto. Instant access for root on reboot with no password. Robert Reed wrote:
yes there is a way to get control back..... I'm not clear if you are referring to a Linux box or windows.... please clarify? for windows boxes there are live Linux distros that will allow you to change the admin password....... with Linux you can attack the shadow password file and delete the admin password... then log on as root and create a new password for the root account ----- Original Message ----- From: "Alexander Klimov" <alserkli () inbox ru> To: "Emmanuel Goldstein" <goldstein101 () gmail com> Cc: <security-basics () securityfocus com> Sent: Tuesday, May 31, 2005 1:33 AM Subject: Reseting root password Was: user name from security logsOn Sun, 29 May 2005, Emmanuel Goldstein wrote:I have physical access to the computer and i can also access all hd's files using a LiveCD linux distribution. So, here's my question: Is there anyway to change the admin password and/or get the machine's control back?Boot a LiveCD, mount the root partition: mkdir /tmp/a; mount /dev/hda1 /tmp/a chroot to it: chroot /tmp/a and change the password: passwd Depending of authentication method used you can do it more directly, e.g., changing a line in /etc/shadow: root:password-hash:.... to root::.... -- Regards, ASK
- -- Steven McIntosh Information Systems Security Officer Computing Service James Watt North Building University of Glasgow Glasgow G12 8QQ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (MingW32) iD8DBQFCnvMg82gHNv0z+WwRAmDJAJ9ckquPxMGO8aCTXobgHYdwZx3yXgCfUNCN UaHNUMH4+j+TUqLWqjUiPhM= =NZWM -----END PGP SIGNATURE-----
Current thread:
- Re: Reseting root password Was: user name from security logs Robert Reed (Jun 01)
- Re: Reseting root password Was: user name from security logs Steven McIntosh (Jun 06)