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Secure Elements Class 5 AVR uses the same RSA key for all installations

Vulnerability Note VU#566553

Original Release Date: 2006-05-30 | Last Revised: 2006-06-07


Secure Elements Class 5 AVR uses the same RSA key for all installations. This may allow a remote attacker to decrypt communications between systems.


Class 5 AVR

Secure Elements Class 5 AVR (Automated Vulnerability Remediation) is a security product that monitors and enforces security policies on network assets. Class 5 AVR is now known as C5 EVM (Enterprise Vulnerability Management). The Class 5 AVR software includes both server and client components.

Class 5 AVR client

The Class 5 AVR client listens on 60000/udp and an additional tcp port. This client receives commands sent by the Class 5 AVR server.

Class 5 AVR server

The Class 5 AVR server is available as an appliance or as software that runs on commodity hardware. The Class 5 AVR server contains information about network assets, vulnerabilities, and remediation history.

The problem

Class 5 AVR client uses the same RSA key for all installations.


A remote attacker may be able to decrypt communications between Class 5 AVR systems.


Upgrade or patch
This issue has been resolved in C5 EVM 2.8.1.

Vendor Information


Secure Elements Affected

Notified:  February 06, 2006 Updated: May 30, 2006



Vendor Statement

Remediation in C5 EVM version 2.8.1 and above

Unique C5 EVM security keys are generated and distributed during customer installation and deployment respectively.

Vendor Information

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

CVSS Metrics

Group Score Vector



Thanks to the NOAA N-CIRT Lab for reporting this vulnerability.

This document was written by Will Dormann.

Other Information

CVE IDs: None
Severity Metric: 0.90
Date Public: 2006-05-30
Date First Published: 2006-05-30
Date Last Updated: 2006-06-07 03:03 UTC
Document Revision: 6

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