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Remote DoS Attack in Small HTTP Server ver. 1.212 Vulnerability
From: labs () USSRBACK COM (Ussr Labs)
Date: Fri, 16 Jun 2000 02:10:54 -0300
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Remote DoS Attack in Small HTTP Server ver. 1.212 Vulnerability USSR Advisory Code: USSR-2000047 Release Date: June 16, 2000 Systems Affected: Small HTTP Server ver. 1.212 (maybe others) THE PROBLEM The Ussr Labs team has recently discovered a buffer overflow memory problem in the Small HTTP Server. What happens is by preforming an attack with a malformed url information to port 80 it will cause the proccess containg the services to stop responding. SPECIAL NOTE: That we take no responsibility for this code it is for educational purposes only. Example: The http Server (Port 80) service has a overflow in the GET command [hellme () die-communitech net$ telnet example.com 80 Trying example.com... Connected to example.com. Escape character is '^]'. GET /[buffer] Where [buffer] is aprox. 65000 characters. and the process containg the service crash Vendor Status: Informed! Vendor Url: http://wwwwin.wplus.net/pp/mrdoors/srv/index.htm Program Url: http://wwwwin.wplus.net/pp/mrdoors/srv/sethttp.exe Related Links: Underground Security Systems Research http://www.ussrback.com Greetings: Eeye, Attrition, w00w00, beavuh, Rhino9, SecurityFocus.com, ADM, HNN, Technotronic and Wiretrip. Copyright (c) 1999-2000 Underground Security Systems Research. Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of Ussr. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please e-mail labs () ussrback com for permission. Disclaimer: The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. Feedback: Please send suggestions, updates, and comments to: Underground Security Systems Research mail:labs () ussrback com http://www.ussrback.com -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.2 for non-commercial use <http://www.pgp.com> iQA/AwUBOUm2j63JcbWNj6DDEQKC/gCfdE5+9ecbvAReAEzJHAiFTu3LVNAAoMXh l9UJBilFfH9I1W9x4LAxeJUi =b07e -----END PGP SIGNATURE-----
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- Remote DoS Attack in Small HTTP Server ver. 1.212 Vulnerability Ussr Labs (Jun 15)