Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2020-8476

Disclosure Date: April 29, 2020 •
CVE-2020-8476 CVSS v3 Base Score: 7.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Central Licensing System 5.1
ABB Ability System 800xA 5.1
ABB Ability System 800xA 6.0
ABB Ability System 800xA 6.1
Compact HMI 5.1
Compact HMI 6.0
Control Builder Safe 1.0
Control Builder Safe 1.1
Control Builder Safe 2.0
Symphony Plus S+ Operations 3.2
Symphony Plus S+ Engineering 2.2
Composer Harmony 5.1
Composer Harmony 6.0
Composer Harmony 6.1
Composer Melody 5.3
Composer Melody 6.3
Harmony OPC Server Standalone 6.0
Harmony OPC Server Standalone 6.1
Harmony OPC Server Standalone 7.0
Advant OCS Control Builder A 1.3
Advant OCS Control Builder A 1.4
Composer CTK 6.1
Composer CTK 6.2
AdvaBuild 3.7 SP1
AdvaBuild 3.7 SP2
OPC Server for Mod 300 (non-800xA) 1.4
OPC Data Link 2.1
OPC Data Link 2.2
Knowledge Manager 8.0
Knowledge Manager 9.0
Knowledge Manager 9.1
Manufacturing Operations Management 1812
Manufacturing Operations Management 1909
Advant OCS AC 100 OPS Server 5.1
Advant OCS AC 100 OPS Server 6.0
Advant OCS AC 100 OPS Server 6.1
ABB Ability™ SCADAvantage 5.1
ABB Ability™ SCADAvantage 5.6.5
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Technical Analysis