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Rewterz Threat Advisory – ICS: ABB Central Licensing System Multiple Vulnerabilities

Severity

High

Analysis Summary

CVE-2020-8481

Confidential data is written in an unprotected file, which may allow an attacker to login to the affected node as a low privileged user and read confidential data from an unprotected file.

CVE-2020-8479

The affected products are vulnerable to an external entity injection, which may allow an attacker to read arbitrary files from the license server and/or from the network. An attacker could also block the license handling.

CVE-2020-8475 

The affected products are vulnerable to a denial-of-service attack, which may allow an attacker to successfully block license handling.

CVE-2020-8476 

The affected products are vulnerable to elevation of privileges, which may allow an attacker to alter licenses assigned to system nodes. This could potentially lead to a situation where legitimate nodes in the system network are denied licenses.

CVE-2020-8471

The affected products are vulnerable to weak file permissions, which may allow an attacker to block license handling, escalate privileges, and execute arbitrary code.

Impact

  • Information Exposure
  • Privilege escalation
  • Improper Access Control

Affected Vendors

ABB

Affected Products

Central Licensing System (CLS)

Remediation

Refer to ICS advisory for the complete list of affected products and upgraded patches.

https://www.us-cert.gov/ics/advisories/icsa-20-154-04