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IBM AIX portmir buffer overflow

Vulnerability Note VU#18500

Original Release Date: 2001-09-26 | Last Revised: 2001-09-27

Overview

There is a buffer overflow vulnerability in the AIX portmir command that may allow local attackers to gain root privileges.

Description

There is a buffer overflow in the AIX portmir command. This problem was described in IBM ERS security bulletin: ERS-SVA-E01-1997:006.1.

Impact

Attackers with access to a local user account may gain root privileges.

Solution

Apply a Patch

IBM has released patches to correct this problem. For AIX version 4.2.1, system administrators should apply APAR#IX71795.

Disable the setuid bit on the portmir command

Disabling the setuid bit on the portmir command will prevent this vulnerability from being exploited. ?You can do this by running the following command as root:

chmod u-s /usr/sbin/portmir

Vendor Information

18500
 

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References

Acknowledgements

This document was written by Cory F. Cohen.

Other Information

CVE IDs: CVE-1999-0092
Severity Metric: 4.31
Date Public: 1997-10-29
Date First Published: 2001-09-26
Date Last Updated: 2001-09-27 18:58 UTC
Document Revision: 10

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