Title: ESi WebEOC Multiple Input Validation Privilege Escalation and Denial of Service Vulnerabilities
Severity: HIGH
Description:
WebEOC is a Web-based emergency management communications system; it is implemented in ASP.
WebEOC is affected by multiple vulnerabilities. These issues are due to a series of input validation, access validation and other design errors in the application.
WebEOC is prone to multiple cross-site scripting vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input to various unspecified parameters. An attacker may leverage any of these issues to have arbitrary script code executed in the browser of an unsuspecting user in the context of the affected site. This may facilitate the theft of cookie-based authentication credentials as well as other attacks.
WebEOC is prone to multiple SQL injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input to various unspecified parameters before using it in SQL queries. These vulnerabilities could permit remote attackers to pass malicious input to database queries, resulting in modification of query logic or other attacks. Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation.
WebEOC is prone to two denial of service vulnerabilities. The first issue is in regards to the login Web page. The page displays all registered usernames in a drop down list. An attacker can attempt to login to any user using an invalid password three times. After the third attempt the account becomes locked denying service to that user. The second denial of service issue is in regards to the uploading of excessively large files. An attacker with upload privileges can exhaust system resources and possibly cause a denial of service.
Some instances of WebEOC use a global shared key to encrypt data. An attacker who gains knowledge of this key can use it to access any instance of the affected application using that key. This could lead to privilege escalation; other attacks are also possible.
WebEOC uses weak algorithms to encrypt sensitive information. A remote attacker could exploit this vulnerability to trivially recover encrypted data. This may lead to the exposure of sensitive information and possibly aid in further attacks against the affected application.
WebEOC handles sensitive information in an insecure manner. Various information such as, system configuration information, usernames, passwords, emergency information, and medical/victim information is insecurely handled. This information can sometimes appear in URI, publicly accessible configuration files, and stored in HTML code that is presented to users. This would result in a loss of confidentiality. Information obtained may aid in further attacks against the underlying system.
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. An attacker may be able to gain elevated privileges giving them access to sensitive information and resources.
The vendor has addressed these issues in WebEOC version 6.0.2.
Affected Products:
- ESi Products WebEOC 6.0.1
References:
- ESi Products: WebEOC Homepage
- US-CERT: VU#138538 - WebEOC is vulnerable to cross-site scripting attacks
- US-CERT: VU#165290 - WebEOC handles sensitive information in an insecure manner
- US-CERT: VU#170394 - WebEOC account lock-out policy may allow a denial-of-service
- US-CERT: VU#258834 - WebEOC privileges are based on client-side authorization
- US-CERT: VU#372797 - WebEOC contains multiple SQL injection vulnerabilities
- US-CERT: VU#388282 - WebEOC uses a global shared key
- US-CERT: VU#491770 - WebEOC implements weak algorithms to encrypt sensitive information
- US-CERT: VU#956762 - WebEOC is vulnerable to a denial-of-service condition via uploading
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