title:  Rockwell Automation FactoryTalk® Service Platform Service Token Vulnerability
description:
A vulnerability exists in Rockwell Automation FactoryTalk® Service Platform that allows a malicious user to obtain the service token and use it for authentication on another FTSP directory. This is due to the lack of digital signing between the FTSP service token and directory.  If exploited, a malicious user could potentially retrieve user information and modify settings without any authentication.
problem types: CWE-347 Improper Verification of Cryptographic Signature
affected:
{
defaultStatus: unaffected
product: FactoryTalk® Service Platform
vendor: Rockwell Automation
versions:
status: affected, version: <= v6.31
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions:
Customers using
Rockwell Automation FactoryTalk® Service Platform
are encouraged to apply the risk mitigations, if possible. Additionally, we encourage customers to implement our suggested security best practices to minimize the risk of vulnerability.
*  Update to v6.40 or later.
*  Set DCOM authentication level to 6,  Mitigating Microsoft DCOM Hardening Patch (CVE-2021-26414) for Affected Rockwell Automation Products (custhelp.com) https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1134040
*  When it is not possible to update to v6.40 or later, enable verification of the publisher information (i.e., digital signature) of any executable attempting to use the FactoryTalk® Services APIs. This helps prevent a malicious user from calling the API to receive the service token. This setting can be changed from the Application Authorization node located within System Policies using the FactoryTalk® Administration Console application.
*   Security Best Practices https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight