Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-7902

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
30/06/2017
Last modified:
20/04/2025

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.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:rockwellautomation:1763-l16awa_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16awa_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16bbb_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16bbb_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16bwa_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16bwa_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16dwd_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1763-l16dwd_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1100:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:1766-l32awa_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1766-l32awa_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1766-l32awaa_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1766-l32awaa_series_b:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1766-l32bwa_series_a:*:*:*:*:*:*:*:* 16.000 (including)
cpe:2.3:a:rockwellautomation:1766-l32bwa_series_b:*:*:*:*:*:*:*:* 16.000 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools