High Risk Vulnerability in HTML Help (ITSS Parser)
From: NGSSoftware Insight Security Research (nisr_at_NEXTGENSS.COM)
Date: 06/15/05
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Date: Wed, 15 Jun 2005 10:34:30 +0100 To: NTBUGTRAQ@LISTSERV.NTBUGTRAQ.COM
Peter Winter-Smith of NGSSoftware has discovered a high risk vulnerability
in one of the dependencies of HTML Help, the InfoTech Storage System parser.
This flaw can permit arbitrary code execution through a number of
applications including HTML Help, Internet Explorer and Outlook/Outlook
Express when parsing certain file-types.
Research has proven this vulnerability to be trivially exploitable on
Windows XP SP2 despite certain inbuild protective mechanisms which XPSP2
includes.
This issue has been resolved in the Microsoft bulletin MS05-026, which may
be downloaded from:
http://www.microsoft.com/technet/security/Bulletin/MS05-026.mspx
NGSSoftware are going to withhold details of this flaw for three months.
Full details will be published on the 15th September 2005. This three month
window will allow users of Microsoft Windows the time needed to apply the
patch before the details are released to the general public. This reflects
NGSSoftware's approach to responsible disclosure.
NGSSoftware Insight Security Research
http://www.ngssoftware.com
http://www.databasesecurity.com/
http://www.nextgenss.com/
+44(0)208 401 0070
-- NTBugtraq Editor's Note: Most viruses these days use spoofed email addresses. As such, using an Anti-Virus product which automatically notifies the perceived sender of a message it believes is infected may well cause more harm than good. Someone who did not actually send you a virus may receive the notification and scramble their support staff to find an infection which never existed in the first place. Suggest such notifications be disabled by whomever is responsible for your AV, or at least that the idea is considered. --
- Previous message: Russ: "Re: MajorRev: v2.0 Microsoft Security Bulletin MS05-023 - Vulnerabilities in Microsoft Word May Lead to Remote Code Execution (890169)"
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