March 25, 2017 Karn Ganeshen

[ICS] Sielco Sistemi Winlog SCADA Software – Insecure Library Loading Allows Code Execution

Sielco Sistemi Winlog SCADA Software Insecure Library Loading Allows Code Execution

Vendor: Sielco Sistemi
Equipment: Winlog SCADA Software
Vulnerability: Uncontrolled Search Path Element

ICS-CERT Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-17-038-01

AFFECTED PRODUCTS

The following Sielco Sistemi products are affected:

  • Winlog Lite SCADA Software, versions prior to Version 3.02.01, and
  • Winlog Pro SCADA Software, versions prior to Version 3.02.01

Vulnerable Libraries:

 

Application Executables (that look for missing DLL):

 

Steps to reproduce

 

IMPACT

Successful exploitation of this vulnerability may allow an attacker to load a malicious DLL and execute code on the affected system with the same privileges as the application that loaded the malicious DLL.

VULNERABILITY OVERVIEW
UNCONTROLLED SEARCH PATH ELEMENT (CWE-427)

An uncontrolled search path element (DLL Hijacking) vulnerability has been identified. Exploitation of this vulnerability could give an attacker access to the system with the same level of privilege as the application that utilizes the malicious DLL.

CVE-2017-5161 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H).

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