Please look at Olaf's blog at AToZed to decide if the bug was fake or real! http://blogs.atozed.com/Olaf/ C0r31mp4ct On 1/23/07, C0r3 1mp4ct <c0r31mp4ct@xxxxxxxxx> wrote:
Type: Deniel of Service Severity: Critical Title: AToZed Software IntraWeb Component for Borland Delphi and Kylix DoS vulnerability Date: January 23, 2007 Synopsys -------- A DoS vulnerability exists in the IntraWeb Component of AToZed Software. Background --------- IntraWeb is a RAD component for Borland Delphi and Kylix by AToZed Software, which allows developers to rapidly develop webapplication. This component is commonly used by Borland developers internationally. Description ----------- DoS conditions occurs, when a specially crafted HTTP request is sent to the webapplication. After the request, the affected thread enters into an infinte loop, and hangs. Under IIS 5.x, the thread will never be stopped. Under IIS 6 the webserver automatically stops the thread after the configured amount of time, or CPU usage. Impact ------ An attack can cause the webapplication to slow down, and after more specially crafted request, to stop processing requests. WorkAround ---------- There is no vendor supplied workaround for the problem at this time. A possible workaround can be, to filter the request body for the special request, and repair it. It can be achieved, by overriding the function called "OnBeforeDispatch" of the TIWServerController object, and repair the request, by changing the "Request.Content" field. Affected versions ----------------- IntraWeb 8.0 and lower versions Vulnerability timeline ---------------------- 2006.08. - Vendor notified, but no answer 2007.01.23 - Vulnerability publicly available Discovery is credited to: C0r31mp4ct
