ProMinent has not provided a mitigation plan for multiple vulnerabilities in its MultiFLEX M10a Controller, according to a report with ICS-CERT.
The vulnerabilities, discovered by Maxim Rupp, are a client-side enforcement of server-side security, insufficient session expiration, cross-site request forgery, information exposure, and unverified password change.
A water treatment controller, all versions of MultiFLEX M10a Controller web interface suffer from the vulnerabilities.
Successful exploitation of these vulnerabilities could allow an attacker to bypass protection mechanisms, assume the identity of authenticated users, and change the device configuration.
Ontario, CA-based ProMinent has not provided mitigations for these vulnerabilities.
ICS-CERT recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Users should:
• Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
• Locate control system networks and remote devices behind firewalls, and isolate them from the business network.
• When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that a VPN is only as secure as the connected devices.
No known public exploits specifically target these vulnerabilities. However, an attacker with low skill level could leverage the vulnerabilities.
In one issue, the log out function in the application removes the user’s session only on the client side. This may allow an attacker to bypass protection mechanisms, gain privileges, or assume the identity of an authenticated user.
CVE-2017-14013 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 5.6.
In another vulnerability, the user’s session is available for an extended period beyond the last activity, allowing an attacker to reuse an old session for authorization.
CVE-2017-14007 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 5.6.
In addition, the application does not sufficiently verify requests, making it susceptible to cross-site request forgery. This may allow an attacker to execute unauthorized code, resulting in changes to the configuration of the device.
CVE-2017-14011 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 8.8.
Also, when an authenticated user uses the “Change Password” feature on the application, the current password for the user is specified in plaintext. This may allow an attacker who has been authenticated to gain access to the password.
CVE-2017-14009 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 6.5.
In addition, when setting a new password for a user, the application does not require the user to know the original password. An attacker who is authenticated could change a user’s password, enabling future access and possible configuration changes.
CVE-2017-14005 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 8.8.
The product sees use in the water and wastewater systems sectors. It sees action on a global basis.