It has been preached by the ASP industry professionals for as long as I've been in it, that ALL included files MUST have a ".asp" extension and that ASP debugging should be disabled on all production servers in order to keep all code out of evil hands. The problem here is 100% between the chair and the keyboard. -----Original Message----- From: bgreenbaumat_private [mailto:bgreenbaumat_private] Sent: Wednesday, February 09, 2000 7:22 PM To: BUGTRAQat_private Subject: ASP Security Hole (fwd) Forwarded with permission of the author. Please direct all replies to jwalshat_private Ben Greenbaum Director of Site Content Security Focus http://www.securityfocus.com ---------- Forwarded message ---------- Description: ============ Active server pages (ASP) with runtime errors expose a security hole that publishes the full source code name to the caller. If these scripts are published on the internet before they are debugged by the programmer, the major search engines index them. These indexed ASP pages can be then located with a simple search. The search results publish the full path and file name for the ASP scripts. This URL can be viewed in a browser and may reveal full source code with details of business logic, database location and structure. Procedure: ========== - In the Altavisa search engine execute a search for +"Microsoft VBScript runtime error" +".inc, " - Look for search results that include the full path and filename for an include (.inc) file. - Append the include filename to the host name and call this up in a web browser. Example: www.rodney.com/stationery/browser.inc Examples: ========= http://shopping.altavista.com/inc/lib/prep.lib Exposes database connections and properties, resource locations, cookie logic, server IP addresses, business logic http://www.justshop.com/SFLib/ship.inc Exposes database properties, business logic http://www.bbclub.com:8013/includes/general.inc Exposes cobranding business logic http://www.salest.com/corporate/admin/include/jobs.inc Exposes datafile locations and structure http://www.bjsbabes.com/SFLib/design.inc Exposes source code for StoreFront 2000 including database structure http://www.ffg.com/scripts/IsSearchEngine.inc Exposes search engine log http://www.wcastl.com/include/functions.inc Exposes members email addresses and private comments file http://www.wcastl.com/flat/comments.txt http://www.traveler.net/two/cookies.inc Exposes cookie logic Resolution: =========== - Search engines should not index pages that have ASP runtime errors. - Programmers should fully debug their ASP scripts before publishing them on the web - Security administrators need to secure the ASP include files so that external users can not view them. =========================== Jerry Walsh JW's Software Gems Email jwalshat_private Phone (949) 855-0233 Website http://www.jwsg.com ===========================
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