[12464] in bugtraq
Overflow in Alibaba Web Server 2.0 (VD#4)
daemon@ATHENA.MIT.EDU (Blue Boar)
Sat Nov 6 13:48:02 1999
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Date: Sat, 6 Nov 1999 00:01:33 -0800
Reply-To: Blue Boar <BlueBoar@THIEVCO.COM>
From: Blue Boar <BlueBoar@THIEVCO.COM>
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To: BUGTRAQ@SECURITYFOCUS.COM
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There have been some other interesting problems in relation to the Alibaba
web server mentioned on Bugtraq already. This was brought up earlier on
vuln-dev, and there is also some information about what Alibaba is, and how
widely it is used.
From:
http://www.securityfocus.com/templates/archive.pike?list=82&date=1999-10-22&msg=199910281536.RAA18018@mail1.cityweb.de
To: Exploit-Dev
Subject: Possibly exploitable overflow in Alibaba 2.0
Date: Thu Oct 28 1999 10:57:43
Author: Thomas Dullien
Message-ID: <199910281536.RAA18018@mail1.cityweb.de>
Hello all together,
Tried a little freeware webserver named Alibaba 2.0 today
and found an exploitable overflow. I telnetted to 127.0.0.1:80
and crashed it using
POST [enter 1028 'x'] / HTTP/1.0
From a disassembled listing I found that it uses a
scanf("%s %s %s", szName, szFile, szSomething);
where szFile is a local variable of 0x400 (=1024) bytes
on the stack directly above the return address.
Coding an exploit for this is going to be a little tricky as
it mustn't have any 0x20, 0x00, 0x61-0x7A in it since
these bytes are changes by the foregoing function
that converts everything into uppercase.
I contacted the authors but they stated since its freeware
there will be no support to it :)
If someone wants to code a full exploit, go ahead :)
--------------------------------------------------
As we've seen from other Bugtraq posts, this product seems fully broken.
Here's more info.
From:
http://www.securityfocus.com/templates/archive.pike?list=82&date=1999-10-29&msg=381B084A.E37193CE@thievco.com
To: Exploit-Dev
Subject: Re: Possibly exploitable overflow in Alibaba 2.0
Date: Sat Oct 30 1999 07:01:30
Author: Blue Boar
Message-ID: <381B084A.E37193CE@thievco.com>
http://www.csm-usa.com/product/alibaba/
"Connect With Confidence !!"
http://www.netcraft.com/whats/?host=www.csm-usa.com%3A80
(Says it's running Alibaba 3.0)
Links to sites running Alibaba:
http://www.netcraft.com/survey/Reports/9909/byserver/Alibaba/index.html
I have a real problem with a company releasing a (potentially) insecure
product, and then crying "freeware" and refusing to release a fix,
source, etc...
------------------------------------------
Looking back, minus the rest of the thread, my message is a bit terse.
Alibaba is a web server that runs on Windows 9x and NT. The current
version that I can see on their web site is 2.0, though you'll notice they
themselves run something that identifies itself as 3.0. Netcraft will give
you a list of web servers running Alibaba. In .com and .net, there were
just over 500.
This is a closed-source Windows program. You can't fix it, and they won't
fix it.
I can't help but be reminded of a Far Side cartoon I like. It shows
various dangerous animals, such as a blowfish, and a rattlesnake. In one
corner of the cartoon is a guy wearing a boot on his head, with an
inner-tube around his middle, holding a rocket launcher. The caption is
"Nature's way of saying 'don't touch'".
BB
P.S. One of the list members suggested "attacking" vulnerable sites with a
patch if one can be hacked together. I certainly can't condone that, but
it makes me chuckle.
