ICS-CERT: Sielco Sistemi Winlog Multiple Vulnerabilities

Monday, July 02, 2012

Infosec Island Admin

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ICS-CERT is aware of a public report of multiple vulnerabilities with proof-of-concept (PoC) exploit code affecting Sielco Sistemi Winlog Version 2.07.14, a supervisory control and data acquisition/human-machine interface (SCADA/HMI) product.

According to this report, the vulnerabilities can be exploited remotely by sending specially crafted requests to TCP/46824. The public report was released by independent security researcher Luigi Auriemma without coordination with either the vendor or ICS-CERT.

ICS-CERT has notified Sielco of the report and has asked Sielco to confirm the vulnerabilities and identify mitigations. ICS-CERT is issuing this alert to provide early notice of the report and identify baseline mitigations for reducing risks to these and other cybersecurity attacks.

The report included vulnerability details and PoC exploit code for the following vulnerabilities:

Vulnerability Type:  Multiple Buffer Overflows
Remotely Exploitable:  Yes
Impact:  Possible Remote Code Execution

Vulnerability Type:  Directory Traversal (Improper Access Control)
Remotely Exploitable:  Yes
Impact:  Information Leakage

Vulnerability Type:  Improper Access of Indexable Resource
Remotely Exploitable:  Yes
Impact:  Possible Remote Code Execution

Vulnerability Type:  Write-What-Where Condition
Remotely Exploitable:  Yes
Impact:  Possible Remote Code Execution

Please report any issues affecting control systems in critical infrastructure environments to ICS-CERT (ics-cert@hq.dhs.gov). Winlog is a SCADA/HMI software package for the supervision of industrial and civil plants. It can connect to PLCs, controllers, motor drives, and I/O modules.

MITIGATION

ICS-CERT is currently coordinating with the vendor and security researcher to identify mitigations.

The full ICS-CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-12-179-01.pdf

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