Re: Security problem in C news and INN
Rafi Sadowsky (rafi@tavor.openu.ac.il)
Sat, 26 Feb 1994 16:22:06 +0200 (IST)
Jeroen Scheerder wrote:
>
> At 14:20 24/2/94 -0500, Perry E. Metzger wrote:
>
> [...]
>
> >> there are shell scripts in Cnews and INN that pass the message to
> >> ucbMail, where one can do ~ escapes.
> >
> >Would simply replacing with /bin/mail fix this?
>
> Yes. But binmail doesn't handle aliases since it completely bypasses
> sendmail (or so I've heard) and doesn't have the '-s' switch, which is
> relied on (and useful) in news reportings.
eh? why do you think /bin/mail doesn't have aliases ( at least SunOS 4 it does)
now on BSD/386 for example /usr/bin/mail is the ucb one - which is probably
where the hole comes from ?
about the '-s' flag your right but just prepending an 'echo Subject: xxx'
should do the trick ( c-news doesn't use '-s' anyhow )
Rafi
-
TAVOR-rafi (304)>/bin/mail -v usenet
usenet... aliased to rafi
Subject: test
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