PT-2017-02: Insufficient Permissions in Rockwell Automation Micrologix 1100 and 1400 PLC
Vulnerable product
Micrologix 1100
Version: 1763-L16AWA, 1763-L16BBB, 763-L16BWA, 1763-L16DWD series A and B before 15.000
Micrologix 1400
Version: 1766-L32AWA, 1766-L32BWA, 1766-L32BWAA, 1766-L32BXB, 1766-L32BXBA, 1766-L32AWAA series A and B before 16.000
Links:
http://www.rockwellautomation.com/
Severity level
Severity level: Low
Impact: Access Control Changing
Access Vector: Remote
CVSS v3:
Base Score: 2.7
Vector: (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L)
CVE: CVE-2016-9338
Software description
Rockwell Automation Micrologix 1100 and 1400 are programmable logic controllers.
Vulnerability description
The specialists of the Positive Research center have detected an Insufficient Permissions vulnerability in Rockwell Automation Micrologix 1100 and 1400 PLC.
Vulnerability in Allen-Bradly MicroLogix 1100 and 1400 allows remote attackers with administrative privileges to remove all administrators that disables some functions of the affected device until its factory reset.
How to fix
Update the firmware of your device to the latest version
Advisory status
11.06.2015 - Vendor gets vulnerability details
05.01.2017 - Vendor releases fixed version and details
11.01.2017 - Public disclosure
Credits
The vulnerability was detected by Ilya Karpov, Positive Research Center (Positive Technologies Company)
References
http://en.securitylab.ru/lab/PT-2017-02
https://ics-cert.us-cert.gov/advisories/ICSA-16-336-06
Reports on the vulnerabilities previously discovered by Positive Research:
http://www.ptsecurity.com/ww-en/analytics/threatscape/
http://en.securitylab.ru/lab/