CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
42.8%
Successful exploitation of these vulnerabilities could allow an attacker to create read/write/execute commands within the Mark VIe control system.
All versions of the GE Mark VIe Controller are affected by at least one of the vulnerabilities. Some versions are affected by both. For more information contact GE.
The affected product has an unsecured Telnet protocol that may allow a user to create an authenticated session using generic default credentials.
CVE-2019-13554 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
The affected product is shipped with pre-configured hard-coded credentials that may allow root-user access to the controller. A limited application of the affected product may ship without setup and configuration instructions immediately available to the end user. The bulk of controllers go into applications requiring the GE commissioning engineer to change default configurations during the installation process.
CVE-2019-13559 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H).
Sharon Brizinov of Claroty reported these vulnerabilities to GE.
GE recommends users apply the following mitigations:
GE Mark VIe Control system owners can request access and find instructions in GEH-6808, Control*ST Software Suite How to Guidelines.
GE Mark VIe Control system owners can reference GEH-6839, Secure Deployment Guidelines, for further instruction on security actions with installation and maintenance of their control system.
GE recommends organizations employ a defense-in-depth strategy through user authentication and authorization with features native to the control system to remediate security risk against the communication protocol vulnerabilities described.
For more information contact GE at <https://www.ge.com/security>
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.
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CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
42.8%