XPath Injection in Abb 800xa System
CVE-2020-8479
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. an XML External Entity Injection vulnerability exists that allows an attacker to read or call arbitrary files from the license server and/or from the network and also block the license handling.
EPSS: 0.022 (80.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2020-8479?
- CVE-2020-8479 is a critical-severity vulnerability in Abb 800xa System, classified under XML Injection (Blind XPath Injection). CVSS score: 9.4/10. Published 2020-04-29.
- How severe is CVE-2020-8479?
- Critical severity. CVSS v3 base score is 9.4 out of 10.
- Is CVE-2020-8479 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.