CVE-2020-8476 - CVE House
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Status published Medium CVE-2020-8476

ABB Central Licensing System - Elevation of Privilege Vulnerability

Vulnerability Description

For the Central Licensing Server component used in ABB products ABB Ability™ System 800xA and related system extensions versions 5.1, 6.0 and 6.1, Compact HMI versions 5.1 and 6.0, Control Builder Safe 1.0, 1.1 and 2.0, Symphony Plus -S+ Operations 3.0 to 3.2 Symphony Plus -S+ Engineering 1.1 to 2.2, Composer Harmony 5.1, 6.0 and 6.1, Melody Composer 5.3, 6.1/6.2 and SPE for Melody 1.0SPx (Composer 6.3), Harmony OPC Server (HAOPC) Standalone 6.0, 6.1 and 7.0, ABB Ability™ System 800xA/ Advant® OCS Control Builder A 1.3 and 1.4, Advant® OCS AC100 OPC Server 5.1, 6.0 and 6.1, Composer CTK 6.1 and 6.2, AdvaBuild 3.7 SP1 and SP2, OPCServer for MOD 300 (non-800xA) 1.4, OPC Data Link 2.1 and 2.2, Knowledge Manager 8.0, 9.0 and 9.1, Manufacturing Operations Management 1812 and 1909, ABB AbilityTM SCADAvantage versions 5.1 to 5.6.5, a weakness in validation of input exists that allows an attacker to alter licenses assigned to the system nodes by sending specially crafted messages to the CLS web service.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

Central Licensing System, ABB Ability System 800xA, Compact HMI, Control Builder Safe, Symphony Plus S+ Operations, Symphony Plus S+ Engineering, Composer Harmony, Composer Melody, Harmony OPC Server Standalone, Advant OCS Control Builder A, Composer CTK, AdvaBuild, OPC Server for Mod 300 (non-800xA), OPC Data Link, Knowledge Manager, Manufacturing Operations Management, Advant OCS AC 100 OPS Server, ABB Ability™ SCADAvantage
Vulnerable Versions:
5.1, 6.0, 6.1, 1.0, 1.1, 2.0, 3, 5.3, 6, 7.0, 1.3, 1.4, 6.2, 3.7 SP1, 3.7 SP2, 2.1, 2.2, 8.0, 9.0, 9.1, 1812, 1909, unspecified

Timeline

Official Publish: April 29th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)