An issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 controller 1763-L16AWA, Series A and B, Version 14.000 and prior versions; 1763-L16BBB, Series A and B, Version 14.000 and prior versions; 1763-L16BWA, Series A and B, Version 14.000 and prior versions; and 1763-L16DWD, Series A and B, Version 14.000 and prior versions. Because of an Incorrect Permission Assignment for Critical Resource, users with administrator privileges may be able to remove all administrative users requiring a factory reset to restore ancillary web server function. Exploitation of this vulnerability will still allow the affected device to function in its capacity as a controller.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| 1763-l16awa_series_a | Rockwellautomation | * | 14.000 (including) |
| 1763-l16awa_series_b | Rockwellautomation | * | 14.000 (including) |
| 1763-l16bbb_series_a | Rockwellautomation | * | 14.000 (including) |
| 1763-l16bbb_series_b | Rockwellautomation | * | 14.000 (including) |
| 1763-l16bwa_series_a | Rockwellautomation | * | 14.000 (including) |
| 1763-l16bwa_series_b | Rockwellautomation | * | 14.000 (including) |
| 1763-l16dwd_series_a | Rockwellautomation | * | 14.000 (including) |
| 1763-l16dwd_series_b | Rockwellautomation | * | 14.000 (including) |
| 1766-l32awa_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32awa_series_b | Rockwellautomation | * | 15.004 (including) |
| 1766-l32awaa_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32awaa_series_b | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bwa_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bwa_series_b | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bwaa_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bwaa_series_b | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bxb_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bxb_series_b | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bxba_series_a | Rockwellautomation | * | 15.004 (including) |
| 1766-l32bxba_series_b | Rockwellautomation | * | 15.004 (including) |