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Re: lynx - someone is deaf and blind ;)
From: emsi () IT PL (Mariusz Woloszyn)
Date: Tue, 7 Mar 2000 19:01:30 +0100


On Sat, 4 Mar 2000, Kris Kennaway wrote:

extremely long URLs. I'm not going to give more examples here, as I'm
afraid I might miss one or two that won't be fixed - developers, use your
head, take a look at the code and fix every suspected piece of code, not
only already published / described bugs.

I have just disabled the lynx port/package in FreeBSD. We won't be
shipping it in FreeBSD 4.0, or until this gets addressed. It's a shame
because it's such a popular and useful tool, but the risk to users is just
too great.

Thanks for notifying the world of these problems :)

I was trying to exploit lynx bug several times.
It's true that lynx segfaults on long URLs, but exploiting it is (IMHO)
impossible because lynx strips all nonprintable characters thus smugling
RET address is impossible. I have never heard about ASCII only shellcode
also:)
I assume lynx bugs are unexploitable...

P.S. You can compile lynx using StackGuard also (AFAIK only under Linux).

--
Mariusz Wo³oszyn
Internet Security Specialist, Internet Partners, GTS Poland



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