WebEOC privileges are based on client-side authorization

Overview

WebEOC ties privileges and roles to client-side resources. If an attacker can access a resource directly, that attacker will be granted all the privileges associated with that resource.

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). WebEOC privileges and authorizations are granted to a user based on the resources they are accessing. It is assumed that if a user can navigate to a specific resource, then that user is authorized to use that resource and obtain all privileges associated with it. In numerous places in a WebEOC system, resources are requested via URIs. An attacker may be able exploit this design by crafting a URI that will directly access a resource, thus elevating that attacker’s privileges.

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Impact

Attackers may be able to gain elevated privileges giving them access to sensitive information and resources.

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Solution

Upgrade

Version 6.0.2 corrects this vulnerability. According to ESi:

In version 6.0.2 this vulnerability has been addressed by adding validation checks to all function calls submitted to the web server. Any resource request sent to the WebEOC application is validated at the server to ensure that the user is logged in and has the proper permissions.
To obtain WebEOC upgrades, contact ESi Technical Support.

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Vendor Information

258834

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Updated: June 21, 2005

Status

Affected

Vendor Statement

This vulnerability has been addressed in version 6.0.2.

Vendor Information

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

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23258834 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.esi911.com/esi/products/webeoc.shtml&gt;
• <http://www.esi911.com/esi/support/support.htm&gt;
• <http://secunia.com/advisories/16075/&gt;

Acknowledgements

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

CVE IDs:	CVE-2005-2286
Severity Metric:	6.83 Date Public: