Vulnerability Note VU#872443

IBM AIX nslookup buffer overflow in hostname to lookup

Original Release date: 26 Sep 2001 | Last revised: 26 Sep 2001


There is a buffer overflow in nslookup that will allow local attackers to gain root privileges on vulnerable AIX systems.


The nslookup command contains a buffer overflow in the hostname to lookup, allowing local attackers to gain root privileges. The vendor (IBM) has reported publicly that this buffer overflow has been exploited by intruders to gain privileges.


Intruders with access to a local account may be able to gain root privileges on the vulnerable system.


Apply a Patch

IBM has released patches to correct this problem. For AIX version 4.3, system administrators should apply APAR#IY02120.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
IBMAffected-26 Sep 2001
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

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



This document was written by Cory F. Cohen.

Other Information

  • CVE IDs: Unknown
  • Date Public: 30 Sep 99
  • Date First Published: 26 Sep 2001
  • Date Last Updated: 26 Sep 2001
  • Severity Metric: 15.75
  • Document Revision: 7


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