Improper input validation in Abb 800xa System
CVE-2020-8476
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.015 (71.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Abb 800xa_system — versions 5.1, 6.0, 6.0.1
- Abb Ability System 800xa — versions 5.1, 6.0, 6.1
- Abb Ability™ Scadavantage — versions 5.1, unspecified
- Abb Advabuild — versions 3.7 SP1, 3.7 SP2
- Abb Advant Ocs Ac 100 Ops Server — versions 5.1, 6.0, 6.1
- Abb Advant Ocs Control Builder A — versions 1.3, 1.4
- Abb Central Licensing System — versions 5.1
- Abb Compact Hmi — versions 5.1, 6.0
- Abb Compact_hmi — versions 5.1, 6.0.1-1, 6.0.3-2
- Abb Composer Ctk — versions 6.1, 6.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cybersecurity@ch.abb.com (Vendor Advisory)
- cybersecurity@ch.abb.com (Vendor Advisory)
- cybersecurity@ch.abb.com
Frequently asked questions
- What is CVE-2020-8476?
- CVE-2020-8476 is a medium-severity vulnerability in Abb 800xa System, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2020-04-29.
- How severe is CVE-2020-8476?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-8476 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.