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Microsoft ASN.1 Library improperly decodes constructed bit strings

Vulnerability Note VU#583108

Original Release Date: 2004-02-10 | Last Revised: 2004-02-10

Overview

The Microsoft ASN.1 Library improperly decodes constructed bit strings which could allow an unauthenticated, remote attacker to execute arbitrary code with SYSTEM privileges.

Description

Abstract Syntax Notation number One (ASN.1) is an international standard used to describe and transmit data packets between applications and across networks. There is an integer overflow vulnerability in the BER decoding function of the Microsoft ASN.1 Library. This vulnerability could allow an unauthenticated, remote attacker to execute arbitrary code with SYSTEM privileges on the affected system.

Impact

An unauthenticated, remote attacker could execute arbitrary code with SYSTEM privileges.

Solution

Apply Patch

Apply the patch (828028) referenced in Microsoft Security Bulletin MS04-007.

Vendor Information

583108
 
Affected   Unknown   Unaffected

Microsoft Corporation

Updated:  February 10, 2004

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please refer to Microsoft Security Bulletin MS04-007.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Credit

This vulnerability was reported by eEye Digital Security.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2003-0818
Severity Metric: 27.72
Date Public: 2004-02-10
Date First Published: 2004-02-10
Date Last Updated: 2004-02-10 20:50 UTC
Document Revision: 8

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