CVE-2017-7902
Description
A "Reusing a Nonce, Key Pair in Encryption" issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. The affected product reuses nonces, which may allow an attacker to capture and replay a valid request until the nonce is changed.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rockwellautomation 1763-l16awa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1763-l16awa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1763-l16bbb_series_a | v ≤ 16.000 | — |
| rockwellautomation 1763-l16bbb_series_b | v ≤ 16.000 | — |
| rockwellautomation 1763-l16bwa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1763-l16bwa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1763-l16dwd_series_a | v ≤ 16.000 | — |
| rockwellautomation 1763-l16dwd_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32awa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32awa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32awaa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32awaa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bwa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bwa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bwaa_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bwaa_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bxb_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bxb_series_b | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bxba_series_a | v ≤ 16.000 | — |
| rockwellautomation 1766-l32bxba_series_b | v ≤ 16.000 | — |
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