Vulnerability Note VU#973460
drchrono Electronic Health Record (EHR) web applications vulnerable to cross-site scripting and cross-site request forgery
Original Release date: 29 Oct 2014 | Last revised: 29 Oct 2014

Overview
drchrono Electronic Health Record (EHR) web applications allow cross-site scripting (XSS) and cross-site request forgery (CSRF) that could allow an attacker to obtain sensitive patient information.

Description
drchrono provides an EHR web application service at drchrono.com, onpatient.com, and possibly other domains. The application contains XSS (CWE-80) and CSRF (CWE-352) vulnerabilities:

CSRF in new user feature allows a user to be created
CSRF protection bypass in new user feature allows CSRF, also allows an administrator to be created, requires attacker to be able to manipulate DNS or HTTP traffic
XSS in email feature sends email to patients
XSS in media upload feature allows attacker to read all data
XSS in email parsing allows authenticated user (including patients) to create a malicious email message to be read by a victim
XSS in patient document upload feature allows attacker to read all data

To exploit these vulnerabilities, an attacker would need to 1.) be (or act as) an authenticated user to upload or send malicious content or 2.) entice an authenticated user (most likely a clinician) to access the attacker’s uploaded content or a web page hosted by the attacker.

Impact
By uploading or enticing a user to visit a specially crafted web page (either uploaded to the application or hosted by the attacker), an attacker can obtain nearly any EHR data, including sensitive patient health records and personally identifying information (PII).

Solution
These vulnerabilities have been fixed as of 6 Oct 2014.

Vendor Information (Learn More)

No information available. If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
5.1
AV:N/AC:H/Au:N/C:P/I:P/A:P

Temporal
4.4
E:POC/RL:U/RC:UR

Environmental
3.6
CDP:ND/TD:M/CR:H/IR:ND/AR:ND

References

http://cwe.mitre.org/data/definitions/352.html
http://cwe.mitre.org/data/definitions/80.html

Credit

Thanks to Josh Mandel for researching and reporting these vulnerabilities, and drchrono for engaging and resolving them.
This document was written by Art Manion.

Other Information

CVE IDs:
Unknown

Date Public:
29 Oct 2014

Date First Published:
29 Oct 2014

Date Last Updated:
29 Oct 2014

Document Revision:
12

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