9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.562 Medium
EPSS
Percentile
97.7%
A vulnerability in the way Microsoft Office handles Rich Text Format files may lead to execution of arbitrary code.
Microsoft Office contains a vulnerability that could be exploited when parsing malformed strings contained in specially crafted Rich Text Format (.rtf) files. According to Microsoft Security Bulletin ms08-026:
A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the affected user or cause a denial-of-service condition.
Update
Microsoft has released an update to address this issue. See Microsoft Security Bulletin ms08-026 for more details.
Do not open untrusted Microsoft Office documents
Do not open unfamiliar or unexpected Microsoft Office documents, particularly those hosted on web sites or delivered as email attachments. Please see Cyber Security Tip ST04-010.
Disable automatic opening of Microsoft Office documents
By default, Microsoft Office 97 and Microsoft Office 2000 will configure Internet Explorer to automatically open Microsoft Office documents. This feature can be disabled by using the Office Document Open Confirmation Tool. Mozilla Firefox users should disable automatic opening of files, as specified in the Securing Your Web Browser document.
Do not rely on file name extension filtering
In most cases, Windows will call a Microsoft Office application to open a document even if the document has an unknown file extension. Filtering for common extensions (e.g., .ppt, .xls, and .doc) will not detect all Microsoft Office documents. Additionally, a Microsoft Office file with no file extension will also open with a Microsoft Office application.
543907
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Updated: May 13, 2008
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to Microsoft Security Bulletin ms08-026.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23543907 Feedback>).
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<http://www.microsoft.com/technet/security/bulletin/ms08-026.mspx>
This vulnerability was reported in Microsoft Security Bulletin ms08-026. Microsoft credits wushi of team509, working with Zero Day Initiative, for reporting this issue.
This document was written by Chris Taschner.
CVE IDs: | CVE-2008-1091 |
---|---|
Severity Metric: | 25.25 Date Public: |