cve/2020/CVE-2020-8476.md

### [CVE-2020-8476](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8476)
![](https://img.shields.io/static/v1?label=Product&message=ABB%20%20Ability%E2%84%A2%20SCADAvantage&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=ABB%20Ability%20System%20800xA&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=AdvaBuild&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Advant%20%20OCS%20AC%20100%20OPS%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Advant%20OCS%20Control%20Builder%20A&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Central%20Licensing%20System&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Compact%20HMI&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Composer%20CTK&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Composer%20Harmony&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Composer%20Melody%20&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Control%20Builder%20Safe&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Harmony%20OPC%20Server%20Standalone&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Knowledge%20Manager&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Manufacturing%20Operations%20Management&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=OPC%20Data%20Link&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=OPC%20Server%20for%20Mod%20300%20(non-800xA)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Symphony%20Plus%20S%2B%20Engineering%20&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Symphony%20Plus%20S%2B%20Operations&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%201.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%201.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%201.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%201812%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%202.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%203.7%20SP1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%205.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%205.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%206.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%206.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3D%208.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D%205.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=1.1%3C%3D%202.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=3%3C%3D%203.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=5%3E%3D%205.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%20Improper%20Input%20Validation&color=brighgreen)

### 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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Live-Hack-CVE/CVE-2020-8476