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Date: Wed, 02 Sep 2020 14:50:46 +0000
From: Adaptive Security Consulting via Fulldisclosure
To: "" <>
Subject: [FD] Hyland OnBase 19.x and below - SQL Injection

CVSSv3.1 Score

Hyland Software - ( and

Hyland OnBase
All derivatives based on OnBase

Versions Affected
All versions up to and prior to OnBase Foundation EP1 (tested: and OnBase 18 (tested: OnBase Foundation EP2 and OnBase Foundation EP3 were not available to test, but Hyland's response indicates that they are not likely to have fixed the vulnerabilities, especially given how numerous the instances of SQL injection are.

Adaptive Security Consulting

Vulnerability Summary
Because Hyland OnBase largely relies on client-side validation, the server-side contains a number of critical SQL injection vulnerabilities, including Connection String injection, that allow remote users to execute arbitrary SQL queries as the database administrator. Additionally, the Connection String injection vulnerabilities allow unauthenticated users to connect OnBase to arbitrary SQL servers and execute arbitrary commands as the database administrator. An attacker may leverage these vulnerabilities to modify, delete, insert, or read arbitrary data inside the database, to probe backend services, to connect OnBase to a malicious or attacker-controlled SQL server, and other tasks.

Technical Details
OnBase 18 contains a number of direct string concatenations to form SQL queries and contains considerably more SQL injection flaws than 19 and above, however, all versions contain string concatenations within a series of important and unprotected actions, such as: TestConnection_LocalOrLinkedServer, CreateFilterFriendlyView, and AddWorkViewLinkedServer. By sending a SOAP request to the OnBase server querying the vulnerable service method and using the injection point any user can execute arbitrary SQL queries as the SQL administrator. In total, over fifty vulnerable methods were found in OnBase 19, and several hundred in OnBase 18, with many methods containing multiple vulnerable parameters (e.g. "TableName", "ColumnName", "Name", "UserId", and "Password"). Several of the vulnerable methods do not require the user to be authenticated, most allowed any authenticated user to access them, and a few were only available to people with special (but not administrative) permissions.

Unfortunately, attempts to notify Hyland of the vulnerabilities have been rebuffed as not being something that they have to fix since fixing vulnerabilities, according to the Director of Application Security, is "creating custom code" and no known fix is in place. It is recommended that users try to mitigate the vulnerability by ensuring that the OnBase server is inaccessible to anyone other than trusted users and that a WAF be used (note that OnBase can use "optimized" communication that is pure binary -- if this is used, it will be much harder to configure the WAF to protect against these vulnerabilities).

07 May 2019 - Adaptive Security Consulting discovered a series of vulnerabilities in medical records management and search applications being considered by our client
15 May 2019 - The client was provided with the results of the assessment, including POCs for a number of high and critical vulnerabilities
12 July 2019 - Client asked for more information and demonstrations
01 October 2019 - Client asked to test latest version of Hyland software
15 October 2019 - Client was informed that EP1 contained many of the same vulnerabilities
March 2020 - Client contacted Hyland and spoke with the Director of Application Security who said that fixing vulnerabilities was "writing custom code" and that Hyland "doesn't write custom code"
21 April 2020 - Adaptive Security Consulting attempted to contact Hyland's Application Security Team via email on behalf of client, but attempts were ignored

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