CVE-2020-8476 ABB Central Licensing System - Elevation of Privilege Vulnerability
Attackers can alter system node licenses via crafted messages to the Central Licensing Server web service, impacting ABB industrial control systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-8476?
CVE-2020-8476 is a medium-severity vulnerability in ABB Ability™ SCADAvantage, published on 29 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2020-8476?
It affects 3 products.
Products include Abb 800xa System, Abb Compact Hmi, Abb Control Builder Safe.
How do I fix CVE-2020-8476?
No fix has been published for CVE-2020-8476 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-8476 being exploited?
There is no known exploitation of CVE-2020-8476 in the wild and no public exploit code.
Other vulnerabilities in ABB Ability™ SCADAvantage
Sources
Also known as GHSA-jpj9-ccww-8gcw.