CVE-2017-12734 : Exploit Details and Defense Strategies

Siemens has identified a security vulnerability in LOGO! 8 BM and SIPLUS variants with versions older than V1.81.2, allowing attackers to access session IDs through the integrated web server on port 80/tcp.

Understanding CVE-2017-12734

This CVE involves an information leak vulnerability in Siemens' LOGO! 8 BM and SIPLUS variants.

What is CVE-2017-12734?

The CVE-2017-12734 vulnerability allows attackers to obtain session IDs of active user sessions by accessing the integrated web server on port 80/tcp. The user must already be logged into the web interface for exploitation.

The Impact of CVE-2017-12734

This vulnerability could lead to unauthorized access to user sessions and potentially compromise sensitive information.

Technical Details of CVE-2017-12734

Siemens' LOGO! 8 BM and SIPLUS variants are affected by this vulnerability.

Vulnerability Description

The flaw allows attackers to acquire session IDs through the integrated web server on port 80/tcp.

Affected Systems and Versions

Product: LOGO! 8 BM (incl. SIPLUS variants)
Vendor: Siemens
Versions Affected: All versions < V1.81.2

Exploitation Mechanism

Attackers need network access to the integrated web server on port 80/tcp
Users must be logged into the web interface for the vulnerability to be exploited

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Use the integrated webserver on port 80/tcp only in trusted networks

Long-Term Security Practices

Regularly update and patch affected systems
Implement network segmentation and access controls

Patching and Updates

Siemens may release patches or updates to address this vulnerability