Detections
Analytics
Rockwell Micrologix Improper Access Control (CVE-2017-14471)
critical Tenable OT Security Plugin ID 500273
Synopsis
The remote OT asset is affected by a vulnerability.Description
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.
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Solution
Refer to the vendor advisory.See Also
Plugin Details
Severity: Critical
ID: 500273
Version: 1.5
Type: remote
Family: Tenable.ot
Published: 2/7/2022
Updated: 11/30/2023
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2017-14471
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:rockwellautomation:micrologix_1400_b_firmware
Required KB Items: Tenable.ot/Rockwell
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/5/2018
Vulnerability Publication Date: 4/5/2018
Reference Information
CVE: CVE-2017-14471