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CERT Coordination Center

Computer Associates MLink "mclear" command vulnerable to buffer overflow via long string of characters

Vulnerability Note VU#544995

Original Release Date: 2002-05-16 | Last Revised: 2002-05-16


A locally exploitable buffer overflow exists in mclear.


CA-MLINK is a managed data transport service. For more information about CA-MLINK, please see the product brochure.

Based on a public report, it appears there is a locally exploitable buffer overflow in the mclear command that is included with CA-MLINK.


A local attacker can execute arbitrary code on the vulnerable host.


The CERT/CC is currently unaware of a practical solution to this problem.

Vendor Information

Affected   Unknown   Unaffected

Computer Associates

Notified:  April 10, 2002 Updated:  April 17, 2002



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.


The CERT/CC has no additional comments at this time.

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



The CERT/CC credits KF <> for discovering this vulnerability and working with us to further understand it.

This document was written by Ian A. Finlay.

Other Information

CVE IDs: None
Severity Metric: 9.38
Date Public: 2002-04-05
Date First Published: 2002-05-16
Date Last Updated: 2002-05-16 18:02 UTC
Document Revision: 17

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