Current 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 Code: 0012 Fault Type: Non-User Description: A fault state can be triggered by overwriting the ladder logic data file (type 0x22 number 0x02) with null values.
Source:
MITRE
Description Last Modified:
04/05/2018
View Analysis Description
Analysis 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 Code: 0012 Fault Type: Non-User Description: A fault state can be triggered by overwriting the ladder logic data file (type 0x22 number 0x02) with null values.
Source:
MITRE
Description Last Modified:
04/05/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
9.8 CRITICAL
Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
(V3 legend)
Impact Score:
5.9
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS v2.0 Severity and Metrics:
Base Score:
7.5 HIGH
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
(V2 legend)
Impact Subscore:
6.4
Exploitability Subscore:
10.0
Access Vector (AV):
Network
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Partial
Integrity (I):
Partial
Availability (A):
Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service
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Change History
1 change record found
- show changes
Initial Analysis -
5/10/2018 12:42:24 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
AND
OR
*cpe:2.3:o:rockwellautomation:micrologix_1400_b_firmware:*:*:*:*:*:*:*:* versions up to (including) 21.2
OR
cpe:2.3:h:rockwellautomation:micrologix_1400:-:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:P/I:P/A:P) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Added |
CWE |
|
CWE-284 |
| Changed |
Reference Type |
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0443 No Types Assigned |
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0443 Exploit, Third Party Advisory |