Multiple vulnerabilities in ABB Central Licensing System

1) XML External Entity injection

EUVDB-ID: #VU27363

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8479

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or block license handling.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

This vulnerability affects the following ABB CLS products:

• ABB Ability System 800xA and related system extensions: Versions 5.1, 6.0, 6.1
• Compact HMI: Versions 5.1, 6.0
• Control Builder Safe: Versions 1.0, 1.1, 2.0
• ABB Ability Symphony Plus – S+ Operations: Versions 3.0 to 3.2
• ABB Ability Symphony Plus – S+ Engineering: Versions 1.1 to 2.2
• Composer Harmony: Versions 5.1, 6.0, 6.1
• Composer Melody (incl. SPE for Melody 1.0 SPx): Versions 5.3, 6.1, 6.2, 6.3
• Harmony OPC Server (HAOPC): Standalone Versions 6.0, 6.1, 7.0
• ABB Ability System 800xA / Advant OCS Control Builder A: Versions 1.3, 1.4
• Advant OCS AC 100 OPC Server: Versions 5.1, 6.0, 6.1
• Composer CTK: Versions 6.1, 6.2
• AdvaBuild: Versions 3.7 SP1, 3.7 SP2
• OPC Server MOD 300 (non-800xA): Version 1.4
• OPC Data Link: Versions 2.1, 2.2
• ABB Ability Knowledge Manager: Versions 8.0, 9.0, 9.1
• ABB Ability Manufacturing Operations Management: Versions 1812, 1909

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ABB Central Licensing System (CLS): before 6.0.0.26

External links

http://applied-risk.com/assets/uploads/whitepapers/AR2020002-ABB-800xA-MultipleVulnerabilities.pdf
http://search.abb.com/library/Download.aspx?DocumentID=2PAA121230&LanguageCode=en&DocumentPartId=&Action=Launch
http://search.abb.com/library/Download.aspx?DocumentID=2PAA121231&LanguageCode=en&DocumentPartId=&Action=Launch

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU27360

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8471

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to weak file permissions. A local user can modify the system-wide configuration and gain elevated privileges on the target system, or generate denialof-service effects through file deletion or modification.

This vulnerability affects the following ABB CLS products:

• ABB Ability System 800xA and related system extensions: Versions 5.1, 6.0, 6.1
• Compact HMI: Versions 5.1, 6.0
• Control Builder Safe: Versions 1.0, 1.1, 2.0
• ABB Ability Symphony Plus – S+ Operations: Versions 3.0 to 3.2
• ABB Ability Symphony Plus – S+ Engineering: Versions 1.1 to 2.2
• Composer Harmony: Versions 5.1, 6.0, 6.1
• Composer Melody (incl. SPE for Melody 1.0 SPx): Versions 5.3, 6.1, 6.2, 6.3
• Harmony OPC Server (HAOPC): Standalone Versions 6.0, 6.1, 7.0
• ABB Ability System 800xA / Advant OCS Control Builder A: Versions 1.3, 1.4
• Advant OCS AC 100 OPC Server: Versions 5.1, 6.0, 6.1
• Composer CTK: Versions 6.1, 6.2
• AdvaBuild: Versions 3.7 SP1, 3.7 SP2
• OPC Server MOD 300 (non-800xA): Version 1.4
• OPC Data Link: Versions 2.1, 2.2
• ABB Ability Knowledge Manager: Versions 8.0, 9.0, 9.1
• ABB Ability Manufacturing Operations Management: Versions 1812, 1909

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ABB Central Licensing System (CLS): before 6.0.0.26

External links

http://applied-risk.com/assets/uploads/whitepapers/AR2020002-ABB-800xA-MultipleVulnerabilities.pdf
http://search.abb.com/library/Download.aspx?DocumentID=2PAA121230&LanguageCode=en&DocumentPartId=&Action=Launch
http://search.abb.com/library/Download.aspx?DocumentID=2PAA121231&LanguageCode=en&DocumentPartId=&Action=Launch

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.