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CVE-2020-8476— ABB Central Licensing System - Elevation of Privilege Vulnerability

Quick assessment

Affected
ABB Central Licensing System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ABB Ability System 800xA等都是瑞士ABB公司的产品。ABB Ability System 800xA是一套用于工控行业的分布式控制系统。ABB Compact HMI是一套监控和数据采集系统。ABB Control Builder Safe是一款用于配置和下载AC 800M High Integrity安全应用程序的工程工具。 多款ABB产品中的Central Licensing Server组件存在输入验证错误漏洞。攻击者可通过发送特制的消息利用该漏洞修改分配到系统节点的许可证。

CVSS 5.3 · Medium EPSS 1.55% · P74

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-8476

Vulnerability Information
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Vulnerability Title
ABB Central Licensing System - Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
多款ABB产品输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ABB Ability System 800xA等都是瑞士ABB公司的产品。ABB Ability System 800xA是一套用于工控行业的分布式控制系统。ABB Compact HMI是一套监控和数据采集系统。ABB Control Builder Safe是一款用于配置和下载AC 800M High Integrity安全应用程序的工程工具。 多款ABB产品中的Central Licensing Server组件存在输入验证错误漏洞。攻击者可通过发送特制的消息利用该漏洞修改分配到系统节点的许可证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ABB Central Licensing System 5.1 ~ 5* -
ABB ABB Ability System 800xA 5.1 -
ABB Compact HMI 5.1 -
ABB Control Builder Safe 1.0 -
ABB Symphony Plus S+ Operations 3 ~ 3.2 -
ABB Symphony Plus S+ Engineering 1.1 ~ 2.2 -
ABB Composer Harmony 5.1 -
ABB Composer Melody 5.3 -
ABB Harmony OPC Server Standalone 6.0 -
ABB Advant OCS Control Builder A 1.3 -
ABB Composer CTK 6.1 -
ABB AdvaBuild 3.7 SP1 -
ABB OPC Server for Mod 300 (non-800xA) 1.4 -
ABB OPC Data Link 2.1 -
ABB Knowledge Manager 8.0 -
ABB Manufacturing Operations Management 1812 -
ABB Advant OCS AC 100 OPS Server 5.1 -
ABB ABB Ability™ SCADAvantage 5.1 ~ unspecified -

II. Public POCs for CVE-2020-8476

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III. Intelligence Information for CVE-2020-8476

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Other References for CVE-2020-8476 (3)

Same Patch Batch · ABB · 2020-04-29 · 13 CVEs total

CVE-2020-8481 9.8 CRITICAL ABB Central Licensing System - Information disclosure
CVE-2020-8479 9.4 CRITICAL ABB Central Licensing System - XML External Entity Injection
CVE-2020-8489 7.8 HIGH ABB System 800xA Inter process communication vulnerability - 800xA Information Management
CVE-2020-8488 7.8 HIGH ABB System 800xA Inter process communication vulnerability - 800xA Batch Management
CVE-2020-8485 7.8 HIGH ABB System 800xA Inter process communication vulnerability - 800xA for Mod 300
CVE-2020-8484 7.8 HIGH ABB System 800xA Inter process communication vulnerability - 800xA for DCI
CVE-2020-8471 7.8 HIGH ABB Central Licensing System - Weak File Permissions
CVE-2020-8487 6.6 MEDIUM ABB System 800xA Inter process communication vulnerability - System 800xA Base
CVE-2020-8486 6.6 MEDIUM ABB System 800xA Inter process communication vulnerability - 800xA RNRP
CVE-2020-8478 5.3 MEDIUM ABB System 800xA Inter process communication vulnerability
CVE-2020-8475 5.3 MEDIUM ABB Central Licensing System - Denial of Service Vulnerability
CVE-2019-5620 ABB MicroSCADA Pro SYS600 Missing Authentication for Critical Function

IV. Related Vulnerabilities

Same product: Central Licensing System
Same vendor: ABB
Same weakness: CWE-20

V. Comments for CVE-2020-8476

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