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Vulnerability Note VU#388282

WebEOC uses a global shared key

Overview

WebEOC installations may use the a common secret key to encrypt data. If an attacker can retrieve this key from one site, they will be able to decipher all data encoded with the key across all WebEOC installations.

I. Description

WebEOC is a web-based crisis information management application that provides functions to gather, coordinate, and disseminate information between emergency personnel and Emergency Operations Centers (EOC). All WebEOC installations may use a common secret key to encrypt data. If an attacker can successfully recover this secret key from any WebEOC installation, they may be able to decrypt data on every other WebEOC installation.

II. Impact

If this shared key is recovered by an attacker, that attacker may be able to decrypt all data encrypted using that key in all WebEOC installations. Such data that may be compromised may include system settings, emergency/medical data, and authentication information.

III. Solution

Upgrade

Version 6.0.2 corrects this vulnerability. According to ESi:

    This vulnerability has been addressed in version 6.0.2 by utilizing a key unique to every customer (these keys existed previously, but were not used). In addition, data encryption is now accomplished using Rinjndael-AES encryption algorithms and hashes are generated with SHA-512 algorithms.
To obtain WebEOC upgrades, contact ESi Technical Support.

Systems Affected
VendorStatusDate NotifiedDate Updated
ESiVulnerable21-Jun-2005

References

http://www.esi911.com/esi/products/webeoc.shtml
http://www.esi911.com/esi/support/support.htm

Credit

This document is based on technical analysis by IOActive and additional information from ESi. Thanks also to the City of Seattle for bringing this to our attention.

This document was written by Jeff Gennari.

Other Information

Date Public:2005-07-13
Date First Published:2005-07-13
Date Last Updated:2005-07-14
CERT Advisory: 
CVE-ID(s): 
NVD-ID(s): 
US-CERT Technical Alerts: 
Metric:3.54
Document Revision:87

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