Summary
Successful exploitation of these vulnerabilities could allow an attacker to delete arbitrary files from this system, fetch arbitrary files, or perform arbitrary write operations.
Vulnerabilities 3
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High 7.5
Privilege escalation via B&R Automation Studio upgrade service
A privilege escalation vulnerability in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.4SP, <. 4.6.3SP, < 4.7.2 and < 4.8.1 allow authenticated users to delete arbitrary files via an exposed interface.
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Medium 6.5
Incomplete communication encryption and validation in B&R Automation Studio upgrade service
A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks…
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Medium 5.5
Zip Slip vulnerability in 3rd-Party library in B&R Automation Studio upgrade service
A directory traversal vulnerability in SharpZipLib used in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x and 4.2.x allow unauthenticated users to write to certain local directories. The vulnerability is also known as zip slip.
Revision history
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#1
ICSA-20-093-01 B&R Automation Studio
References
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ICS Advisory ICSA-20-093-01 Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-20-093-01
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Recommended Practices
https://www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01
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Recommended Practices
https://www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B