[FD] Hyland OnBase 19.x and below - Data Import Denial Of Service

[AdaptiveSecurity Consulting via Fulldisclosure <fulldisclosure@xxxxxxxxxxxx>]

CVSSv3.1 Score
-------------------------------------------------
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Vendor
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Hyland Software - (https://www.hyland.com/en/ and https://www.onbase.com/en/)

Product
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Hyland OnBase
All derivatives based on OnBase

Versions Affected
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All versions up to and prior to OnBase Foundation EP1 (tested: 19.8.9.1000) and 
OnBase 18 (tested: 18.0.0.32). OnBaseFoundation EP2 and OnBaseFoundation EP3 
were not available to test, but Hyland's response indicates that they are not 
likely to have fixed the vulnerability.

Credit
-------------------------------------------------
Adaptive Security Consulting

Vulnerability Summary
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Several of Hyland OnBase's data import utilities are vulnerable to denial of 
service attacks if the data being imported is unexpected or malformed.

Technical Details
-------------------------------------------------
Hyland OnBase allows several different ways to import data, such as COLD and 
DIP. These import processes can be run manually or on a schedule and read files 
from a specific folder. Because they do not perform any validation on the files 
before attempting to process them they are prone to crashing when files do not 
meet expectations. When the import crashes, no other files are processed 
allowing attackers to create a denial of service on an unmonitored, scheduled 
import routine preventing the importing of any new data or limiting what data 
is imported. Attackers can also use the import process to import bad data that 
bypasses security checks and then either attacks the clients or has the client 
attack the server on its behalf.

Solution
-------------------------------------------------
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 validating files being imported 
before they are imported to make certain that they will not crash the importer. 
Access to the import folders and import scripts should also be limited to 
trusted personnel and trusted data only. No other mitigations are currently 
available.

Timeline
-------------------------------------------------
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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