Path: utzoo!attcan!uunet!seismo!sundc!rlgvax!hadron!jsdy
From: jsdy@hadron.UUCP (Joseph S. D. Yao)
Newsgroups: comp.unix.wizards
Subject: Re: Implications of recent virus (Trojan Horse) attack
Summary: ::0:0:::
Keywords: virus security
Message-ID: <809@hadron.UUCP>
Date: 22 Nov 88 15:41:41 GMT
References: <1698@cadre.dsl.PITTSBURGH.EDU> <2151@ficc.uu.net> <8845@smoke.BRL.MIL> <14465@mimsy.UUCP> <1723@cadre.dsl.PITTSBURGH.EDU> <445@auspex.UUCP> <1729@cadre.dsl.PITTSBURGH.EDU> <452@auspex.UUCP>
Reply-To: jsdy@hadron.UUCP (Joseph S. D. Yao)
Distribution: na
Organization: Hadron, Inc., Fairfax, VA
Lines: 28

In article <452@auspex.UUCP> guy@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.

	Joe Yao		jsdy@hadron.COM (not yet domainised)
	hadron!jsdy@{uunet.UU.NET,dtix.ARPA,decuac.DEC.COM}
	arinc,att,avatar,blkcat,cos,decuac,dtix,\
	ecogong,empire,gong,grebyn,inco,insight, \!hadron!jsdy
	kcwc,lepton,netex,netxcom,phw5,rlgvax,	 /
	seismo,sms,smsdpg,sundc,uunet		/