Vulnerability Note VU#981915

Avaya Argent Office vulnerable to denial of service via malformed DNS packets

Original Release date: 30 Oct 2003 | Last revised: 30 Oct 2003


The Avaya Argent Office reboots in response to certain malformed DNS packets, resulting in a denial of service condition.


The Avaya Argent Office reboots when a packet with an empty payload is sent to UDP port 53 (DNS) on its internal interface. By sending repeated packets to this interface, it is possible to cause the device to reboot continuously, resulting in a denial of service condition.


This vulnerability allows attackers on the same shared network segment to reboot affected devices, thus creating a denial of service condition.


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

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
AvayaUnknown03 Apr 200230 Oct 2003
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


  • None


This vulnerability was reported to the Bugtraq mailing list on 08/07/2001 by Jacek Lipkowski.

This document was written by Jeffrey P. Lanza.

Other Information

  • CVE IDs: Unknown
  • Date Public: 07 Aug 2001
  • Date First Published: 30 Oct 2003
  • Date Last Updated: 30 Oct 2003
  • Severity Metric: 0.30
  • Document Revision: 6


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