|
|
|
![]() |
Vulnerability Note VU#936529Microsoft Jet Engine stack buffer overflowOverviewThe Microsoft Jet Engine contains a stack buffer overflow, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.I. DescriptionMicrosoft Jet, or Joint Engine Technology, is a database engine that is used by several Microsoft products, including Access and Visual Basic. A Microsoft Access database uses the .MDB file extension by default. The Microsoft Jet Engine contains a stack buffer overflow in the handling of specially crafted database files.Microsoft Word can link to Jet databases. In some cases, the database can be opened without prompting the user. This can allow Microsoft Word documents to be used as an attack vector for this vulnerability. Microsoft Outlook can also be used as an attack vector by either opening a specially crafted email message or by viewing such a message in the preview pane.
This issue is addressed in Microsoft Security Bulletin MS08-028.
"Standard Jet DB" "Temp Jet DB " "MSISAM Database" According to Microsoft, this can be accomplished in the following ways: Manual (User Interaction)
1. Restart the machine. 2. Open Outlook 3. Click Tools, click Options, and then click the Mail Format tab. 4. Clear the Use Microsoft Word to edit e-mail messages check box. 5. Clear the Use Microsoft Word to read Rich Text e-mail messages box. 6. Exit Outlook. 7. Restart the machine. Impact of Workaround: Users will not be able to use Word as their e-mail editor or use Rich Text to read their e-mail
For information on using registry keys with a Group Policy see Using Administrative Template Files with Registry-Based Group Policy and Distributing Registry Changes. Disable WordMail in Word 2003 Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail] "EditorPreference"=dword:00020000 "UseWordMail"=dword:00000000 Disable WordMail in Word 2002 Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Options\Mail] "EditorPreference"=dword:00020000 "UseWordMail"=dword:00000000 Impact of Workaround: Users will not be able to use Word as their e-mail editor or use Rich Text by default to read their e-mail. To implement the workaround, enter the following command at a command prompt: echo y| cacls "%SystemRoot%\system32\msjet40.dll" /E /P everyone:N Systems Affected
Referenceshttp://www.kb.cert.org/vuls/id/176380 This vulnerability was publicly reported by cocoruder. This document was written by Will Dormann.
If you have feedback, comments, or additional information about this vulnerability, please send us
email. |
|||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||