full-disclosure - Re: IMAP4rev1 2000.283 allows access to system files

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Message-ID: <Pine.GSO.4.43.0208111704120.12191-100000@tundra.winternet.com>
From: dufresne at winternet.com (Ron DuFresne)
Subject: Re: IMAP4rev1 2000.283 allows access to system
 files

an alternative, if these are pop/imap mail only accounts, is to give the
accounts a shell of /dav/null.  Then they can get e-mail, but, are not
allowed to login or do much if anything else.

Additionally, internal production servers should notbe playing pop/imap
mail roles, at least not for external access.

Thanks,

Ron DuFresne


On Sun, 11 Aug 2002, Kurt Seifried wrote:

> Uh. This is EXPECTED behaviour, as in "yes, we know about it, it's designed
> to do this, and has been doing this since the dawn of time". If you do not
> like it you can:
>
> a) chroot the users to their home dir, which is a REAL pain in the ass if
> their mail spool is in /var/spool/mail or something similar, you will also
> need to copy various library files/etc in.
> b) use a different imap server such as cyrus which uses an internal mail
> store
>
>
> Kurt Seifried, kurt@...fried.org
> A15B BEE5 B391 B9AD B0EF
> AEB0 AD63 0B4E AD56 E574
> http://seifried.org/security/
>
>
>
>
> _______________________________________________
> Full-Disclosure - We believe in it.
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>

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