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- Newsgroups: comp.security.misc
- Path: sparky!uunet!mcsun!sunic!fuw.edu.pl!cocos!michalj
- From: michalj@fuw.edu.pl (Michal Jankowski)
- Subject: Re: Setuid script - is this unsecure?
- In-Reply-To: carl@montebello.ecom.unimelb.EDU.AU's message of 5 Nov 92 23:15:51 GMT
- Message-ID: <MICHALJ.92Nov7163644@ccfs1.fuw.edu.pl>
- Sender: news@fuw.edu.pl
- Nntp-Posting-Host: ccfs1
- Organization: Warsaw University Physics Dept.
- References: <1d6fdiINNf5q@bnsgd245.bnr.co.uk> <9231110.9860@mulga.cs.mu.OZ.AU>
- Date: Sat, 7 Nov 1992 15:36:44 GMT
- Lines: 21
-
- >>>>> On 5 Nov 92 23:15:51 GMT, carl@montebello.ecom.unimelb.EDU.AU
- >>>>> (Carl Brewer) said:
-
- >In: (mount script)
-
- Carl> [irrelevant script contents deleted]
-
- Carl> this is the oldest crack trick in the book, and is in the FAQ
- Carl> Suggest you read it, the bit on creating a symbolic link
- Carl> to the script from a file called "-i" ...
- Carl> you may find that informative
-
- Well, it is NOT irrelevant that his scripts start with
-
- #!/bin/sh --
-
- Please note the '--'. The '-i' trick won't work.
- There are however other ways to break his scripts.
-
- Michal
-
-