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Secure Elements Class 5 AVR server fails to properly authenticate session start messages

Vulnerability Note VU#487617

Original Release Date: 2006-05-30 | Last Revised: 2007-05-04

Overview

The Secure Elements Class 5 AVR server fails to properly authenticate "session start" messages. This may allow an attacker to cause the server to initiate TCP connections to arbitrary destinations, which can cause a denial of service to both the server and the specified target.

Description

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

The Class 5 AVR server fails to properly authenticate "session start" messages.

Impact

A remote, unauthenticated attacker may be able to cause the server to initiate TCP connections to arbitrary destinations, which can cause a denial of service to both the server and the specified target.

Solution

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

Vendor Information

487617
Expand all

Secure Elements

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

Status

  Vulnerable

Vendor Statement

Remediation in C5 EVM version 2.8.1 and above

C5 EVM Sensor registrations are invalidated when a Denial Of Service (DOS) attack is suspected / detected.

Vendor Information

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

Addendum

There are 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

References

Credit

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: 0.31
Date Public: 2006-05-30
Date First Published: 2006-05-30
Date Last Updated: 2007-05-04 18:52 UTC
Document Revision: 7

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