From SecurityTeam@DELPHISPLC.COM Thu Sep 21 16:39:13 2000 From: Security Team To: BUGTRAQ@SECURITYFOCUS.COM Date: Thu, 21 Sep 2000 13:44:48 +0100 Subject: [BUGTRAQ] DST2K0031: DoS in BrowseGate(Home) v2.80(H) [The following text is in the "iso-8859-1" character set] [Your display is set for the "US-ASCII" character set] [Some characters may be displayed incorrectly] ============================================================================ Delphis Consulting Plc ============================================================================ Security Team Advisories [18/09/2000] securityteam@delphisplc.com [http://www.delphisplc.com/thinking/whitepapers/] ============================================================================ Adv : DST2K0031 Title : DoS in BrowseGate(Home) v2.80(H) Author : DCIST (securityteam@delphisplc.com) O/S : Microsoft Windows Nt 2000 Professional (SP1) Product : BrowseGate(Home) v2.80(H) Date : 18/09/2000 I. Description II. Solution III. Disclaimer ============================================================================ I. Description ============================================================================ Vendor URL: http://www.netcplus.com/ Delphis Consulting Internet Security Team (DCIST) discovered the following vulnerability in Browsegate under Windows NT. Severity: medium It is possible to cause Browsegate to crash with an invalid read error. This is done by connecting to port 80 upon which the HTTP proxy listens on and sending the following. GET / HTTP/1.0 Authorization: Basic(A x 8k) From: dcist@delphisplc.com If-Modified-Since: Sat, 29 Oct 1994 19:43:31 GMT Referer: http://www.delphisplc.com/(A x 8k) UserAgent: DCIST Browser 1.1 This will cause an error brwgate.exe to crash with it's own error handler twice complaining that memory can not be written or read. II. Solution ============================================================================ Vendor Status: Informed Delphis have worked with NetCPlus to resolve the above issue and are happy to announce that a patch is availible from their web site: Site: http://www.netcplus.com Version: v2.80.001 Delphis would like to take this oppertunity to thank Ian Turner and the developers at Netcplus at the speed they responded. III. Disclaimer ============================================================================ THE INFORMATION CONTAINED IN THIS ADVISORY IS BELIEVED TO BE ACCURATE AT THE TIME OF PRINTING, BUT NO REPRESENTATION OR WARRANTY IS GIVEN, EXPRESS OR IMPLIED, AS TO ITS ACCURACY OR COMPLETENESS. NEITHER THE AUTHOR NOR THE PUBLISHER ACCEPTS ANY LIABILITY WHATSOEVER FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL LOSS OR DAMAGE ARISING IN ANY WAY FROM ANY USE OF, OR RELIANCE PLACED ON, THIS INFORMATION FOR ANY PURPOSE. ============================================================================ This e-mail and any files transmitted with it are intended solely for the addressee and are confidential. They may also be legally privileged.Copyright in them is reserved by Delphis Consulting PLC ["Delphis"] and they must not be disclosed to, or used by, anyone other than the addressee.If you have received this e-mail and any accompanying files in error, you may not copy, publish or use them in any way and you should delete them from your system and notify us immediately.E-mails are not secure. Delphis does not accept responsibility for changes to e-mails that occur after they have been sent. Any opinions expressed in this e-mail may be personal to the author and may not necessarily reflect the opinions of Delphis