Vulnerability in Rockwellautomation Micrologix 1400
CVE-2017-14471
An exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a read or write operation resulting in disclosure of sensitive information, modification of settings, or modification of ladder logic. An attacker can send unauthenticated packets to trigger this vulnerability. Required Keyswitch State: REMOTE or PROG Associated Fault Codes: 0023, 002e, and 0037 Fault Type: Recoverable Description: The STI, EII, and HSC function files contain bits signifying whether or not a fault has occurred. Additionally there is a bit signaling the module to auto start. When these bits are set for any of the three modules and the device is moved into a run state, a fault is triggered.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.380 (98.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.368 · newest: 0.380 · change: +0.011
Affected products
- Rockwellautomation Micrologix 1400
- Rockwellautomation Micrologix 1400 B Firmware
- Talos Allen Bradley — versions Allen Bradley Micrologix 1400 Series B FRN 21.2, Allen Bradley Micrologix 1400 Series B FRN 21.0, Allen Bradley Micrologix 1400 Series B FRN 15
References
- www.talosintelligence.com/vulnerability_reports/TALOS-2017-0443 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-14471?
- CVE-2017-14471 is a critical-severity vulnerability in Rockwellautomation Micrologix 1400. CVSS score: 10.0/10. Published 2018-04-05.
- How severe is CVE-2017-14471?
- Critical severity. CVSS v3 base score is 10.0 out of 10.