Implications of recent virus (Trojan Horse) attack

[Joseph S. D. Yao]

In article <452 at auspex.UUCP> guy at auspex.UUCP (Guy Harris) writes:
< >Excuse ME, but the last four lines of my SunOS 4.0 distribution tape
< >password file are:
< >	+::0:0:::
< >	::0:0:::
< >	::0:0:::
< >	::0:0:::
>					    ...  All of them had
>	+:
>as the last line in the password file ...
>I tried "passwd" ...
>turned it into
>	+::0:0:::

A lot of people - and some editor programs - have the terrible habit
of leaving a blank line at the end of a file after editting it.  The
'passwd' program, at least all versions that I know of, tends to turn
this into the offending line.  This happens because getpwent() returns
a blank pwd entry, and putpwent() or the printf() used insert the
colons.  I'd suggest that all getpwent()'s skip over blank lines
completely.

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