The HTML Help facility in Windows includes an ActiveX control that provides much of its functionality. One of the functions exposed via the control contains an unchecked buffer, which could be exploited by a Web page hosted on an attacker?s site or sent to a user as an HTML mail. An attacker who successfully exploited the vulnerability would be able to run code in the security context of the user, thereby gaining the same privileges as the user on the system.
A second vulnerability exists because of flaws associated with the handling of compiled HTML Help files that contain shortcuts. Because shortcuts allow HTML Help files to take any desired action on the system, only trusted HTML Help files should be allowed to use them. Two flaws allow this restriction to be bypassed. First, the HTML Help facility incorrectly determines the Security Zone in the case where a Web page or HTML mail delivers a CHM file to the Temporary Internet Files folder and subsequently opens it. Instead of handling the CHM file in the correct zone--the one associated with the Web page or HTML mail that delivered it--the HTML Help facility incorrectly handles it in the Local Computer Zone, thereby considering it trusted and allowing it to use shortcuts. This error is compounded by the fact that the HTML Help facility doesn?t consider what folder the content resides in. Were it to do so, it could recover from the first flaw, as content within the Temporary Internet Folder is clearly not trusted, regardless of the Security Zone it renders in.
The attack scenario for this vulnerability would be complex, and involves using an HTML mail to deliver a CHM file that contains a shortcut, then making use of the flaws to open it and allow the shortcut to execute. The shortcut would be able to perform any action the user had privileges to perform on the system.
Like it? Share with your friends!
Other Windows Software of Developer «Microsoft»:
Help Publisher for FrontPage This FrontPage add-in makes adding professional help files to your applications much easier than using HTML Help Workshop alone. With this 3rd party FrontPage add-in, you can create full-featured HTML help files as easily as making a Web site. Help Publish
Microsoft Surface Pro 3 Tablet Firmware/Driver June Note- When Surface updates are provided via the Windows Update service, they are delivered in stages to Surface customers. - As a result, not every Surface will receive the update at the same time, but the update will be delivered to all devices. - If you
Memory Diagnostic Memory Diagnostic tests the Random Access Memory (RAM) on your computer for errors. The diagnostic includes a comprehensive set of memory tests. If you are experiencing problems while running Windows, you can use the diagnostic to determine whether the pro
Microsoft Exchange Best Practices Analyzer Web Update Pack This download contains the latest XML and ExBPA.chm files. Use this package to update your existing installation of the Exchange Best Practices Analyzer. NOTE: If Internet connectivity is available, the Exchange Best Practices Analyzer will attempt to auto
Windows 2000 Authentication Vulnerability Patch This update resolves the "Authentication Flaw in Windows Debugger can Lead to Elevated Privileges" security vulnerability in Windows 2000. This vulnerability is the result of a flaw in the authentication mechanism for the Windows debugging facility that al
Office XP/2003 Add-in: Office Sounds You can install these sounds to have fun audio cues play as you work with Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, and Microsoft Word. For example, you will hear sounds when you: *Work with toolbars, scroll bars, or dialog boxes *Zoom in o
Microsoft Data Access Components (MDAC) Security Patch MS03-033 Microsoft Data Access Components (MDAC) Security Patch MS03-033 is the security patch for Microsoft Data Access Components as described in the MS03-033: Security Update for Microsoft Data Access Components. A number of security issues have been identified
Microsoft LifeCam HD-3000 Driver for Windows 10 The package provides the installation files for Microsoft LifeCam HD-3000 Driver version 4.25.532.0.In order to manually update your driver, follow the steps below (the next steps):1. Go to Device Manager (right click on My Computer, choose Manage and then
Cumulative Security Update for Outlook Express 6 (KB823353) This update addresses the vulnerability discussed in Microsoft Security Bulletin MS04-018. A vulnerability exists in Outlook Express that could allow an attacker to cause Outlook Express to fail. You can help protect your computer by installing this update
Age of Empires II Resign Update This update addresses the issue where the computer player resigns after a few minutes of play. It does not affect multiplayer, meaning players with the update can play with players who do not have the update. It is localized into English, French, German, S
KriptoDrive Demo KriptoDrive is computer software designed to provide security and protection for your computer data. KriptoDrive is ideally suited for laptop and desktop computers and offers strongest data encryption algorithms (AES - 128, 192 or 256 bit). It works by sto
CryptoSticky CryptoSticky can keep memo information secret via encryption, and it can encrypt the clipboard, to interact with virtually any application. It is an easy to use memo application, a computerized version of the yellow paper stickies. Designed to help you or
Desktop Surveillance Personal Omniquad Desktop Surveillance is a monitoring and access control tool. The Personal edition is intended for home computers and laptops. This product allows you to supervise and monitor Web surfing, e-mail, chat rooms, gameplay, and other activities taking
Feebe Secure Disk Don't want others read your personal files in the computer. Try Feebe SecureDisk. It is a powerfull, easy to use disk encryption program, which transparently encrypts your private data. Feebe SecureDisk creates and supports encrypted virtual disks and thes
System Lock System Lock safeguards your computer from harm. Armed with a fully customizable block list, the program keeps user-specified screens from appearing. This way, you keep people from accessing items such as the Windows directory, Recycle Bin, and Control Pane
Safeguard Enterprise PDF Security LockLizard PDF DRM Security is an enterprise PDF security product for the larger publisher or organization who needs to protect, control, and audit use of PDF documents. It provides complete document security for PDF files without the use of insecure passw
Metakodix Stealth Keylogger Metakodix Stealth Keylogger is a powerful keylogger software that discreetly records all keystrokes typed on your computer to an encrypted log file for later view. In addition, it records all non-Latin characters, all clipboard activity and all visited web
Infolock Personal InfoLock Personal is much more than a password manager. It provides extra features designed to keep your private data secure, your data can be fully formatted just like a word document and has a file vault for encrypting any sensative files, not just text
AnyEncrypt Standard Edition AnyBackup Standard Edition is used for protecting your confidential documents and privacy documents. It can encrypt your files or folders with various encryption algorithm. The highlighted features includes simplified operation, high-level security, suppor
SLC Security Console The SLC Security console is an integrated security console that supports Snort, Intruvert and Dragon IDS monitoring. Linksys wireless routers, Linux and Windows syslog devices for security events. The software provides lookup information and email notifica
Supported Operating Systems:
Windows 2000 |
Comments on Windows 2000 Unchecked Buffer Help Security Vulnerability Patch:
Comments not found
Windows Software - Free Windows Downloads, Apps, Games, Freeware, Skype, Media Player, Antivirus, Gimp, Live, Starter for Windows XP, Vista, 7, 8, 10