Microsoft Exchange Server and Outlook TNEF overflow

win-tnef-overflow (22878) The risk level is classified as HighHigh Risk

Description:

Microsoft Office, Microsoft Outlook, and Microsoft Exchange Server are vulnerable to an integer overflow in the handling of Transport Neutral Encapsulation Format (TNEF) MIME attachments, which could allow a remote attacker to execute arbitrary code. The TNEF protocol, used to package and send messages formatted as Rich Text Format (FTF), is used by Microsoft Outlook and Exchange Server. By sending a specially-crafted email message that uses the TNEF protocol, a remote attacker could overflow a buffer and execute arbitrary code to gain complete control over the affected system, once the malicious message is opened or previewed in Outlook or processed by the Microsoft Exchange Server Information Store.

*CVSS:

Base Score: 8
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 5.9
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.

— OR —

Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.

References:

Platforms Affected:

  • Microsoft Exchange Server 2000 SP3
  • Microsoft Exchange Server 5.0 SP2
  • Microsoft Exchange Server 5.5 SP4
  • Microsoft Office 2000 SP3
  • Microsoft Office 2003 SP1
  • Microsoft Office 2003 SP2
  • Microsoft Office XP SP3
  • Microsoft Office Multilingual User Interface Pack 2000
  • Microsoft Office Multilingual User Interface Pack 2003
  • Microsoft Office Multilingual User Interface Pack XP
  • Microsoft Outlook 2000
  • Microsoft Outlook 2002
  • Microsoft Outlook 2003

Reported:

Jan 10, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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