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Date:      Fri, 22 Jan 1999 16:25:24 +0200
From:      Sheldon Hearn <axl@iafrica.com>
To:        current@FreeBSD.ORG
Subject:   WARNING: Today's current breaks passwords
Message-ID:  <437.917015124@axl.noc.iafrica.com>

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This may or may not affect you.

Today's installworld broke passwords for me. By that, I mean that login,
xdm, su and friends gave authentication failures on all passwords for
all users that I tried. I suspect this has to do with a hashing
algorithm that isn't backward compatible.

I used Kerberos to get into the machine as root and change important
passwords to exactly what they were before. This worked. The new
encrypted passwords are happy. :)

I don't want to cause hysteria, and I can't guarantee that my report is
accurate. All the same, do yourself a favour on your next installworld:

	Make SURE you have an open root session somewhere. Do NOT hide
	it behind xlock, and do NOT use lock(1) to keep it safe.

	This will allow you to passwd(1) to create new encrypted
	passwords for your users.

	If you have shell accounts that need access to the box and you
	don't want to have to rehash all their passwords, hold off on
	installworld until someone calls me a liar, or a fix is
	committed.

Ciao,
Sheldon.

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