CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
99.1%
Microsoft Outlook and Microsoft Exchange contain a buffer overflow vulnerability that may allow a remote, unauthenticated attacker to execute arbitrary code on a system running the vulnerable software.
Transport Neutral Encapsulation Format (TNEF)
TNEF is a proprietary Microsoft format for encoding rich text email messages. Microsoft Outlook and Microsoft Exchange support the use of TNEF-encoded messages.
The problem
Microsoft Outlook and Microsoft Exchange do not properly validate TNEF MIME attachments, potentially allowing a buffer overflow to occur. The overflow occurs in in the process that decodes TNEF MIME attachments. A remote attacker may be able trigger the buffer overflow by sending a specially crafted TNEF MIME attachment to a vulnerable Outlook or Exchange installation.
Note that on user workstations, exploitation may require a user to open or preview a malicious mail message in Outlook. However, on Exchange servers, this vulnerability can be exploited without human interaction.
For more information, please see Microsoft Security Bulletin MS06-003.
A remote unauthenticated attacker may be able to execute arbitrary code on a system running the vulnerable software. Microsoft Outlook can trigger the vulnerability when it opens or displays a preview for a specially crafted message. Microsoft Exchange can trigger the vulnerability when it processes a specially crafted message.
Apply a patch from your vendor
Microsoft addresses this vulnerability with the updates listed in Microsoft Security Bulletin MS06-003.
Workarounds
Microsoft has listed several workarounds in Microsoft Security Bulletin MS06-003, including blocking attachments with the MIME type of application/ms-tnef
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Updated: January 10, 2006
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Please see Microsoft Security Bulletin MS06-003.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23252146 Feedback>).
Group | Score | Vector |
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Environmental |
This vulnerability was reported by Microsoft, who in turn credit John Heasman and Mark Litchfield of NGS Software.
This document was written by Will Dormann and Jeff Gennari.
CVE IDs: | CVE-2006-0002 |
---|---|
Severity Metric: | 25.52 Date Public: |