CVE-2019-13925 : What You Need to Know

A security flaw has been detected in SCALANCE S602, SCALANCE S612, SCALANCE S623, and SCALANCE S627-2M devices, potentially leading to a Denial-of-Service situation.

Understanding CVE-2019-13925

This CVE involves uncontrolled resource consumption in Siemens SCALANCE devices, affecting their web server's availability.

What is CVE-2019-13925?

CVE-2019-13925 is a vulnerability found in SCALANCE S602, S612, S623, and S627-2M devices, allowing attackers to disrupt the web server by sending specific packets to port 443/tcp.

The Impact of CVE-2019-13925

Exploiting this vulnerability can result in a Denial-of-Service scenario, rendering the web server unavailable and impacting the device's functionality.

Technical Details of CVE-2019-13925

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability affects SCALANCE S602, S612, S623, and S627-2M devices, versions ranging from V3.0 to V4.1, allowing attackers to disrupt the web server through crafted packets.

Affected Systems and Versions

Product: SCALANCE S602
Vendor: Siemens
Versions: All versions >= V3.0 and < V4.1
Product: SCALANCE S612
Vendor: Siemens
Versions: All versions >= V3.0 and < V4.1
Product: SCALANCE S623
Vendor: Siemens
Versions: All versions >= V3.0 and < V4.1
Product: SCALANCE S627-2M
Vendor: Siemens
Versions: All versions >= V3.0 and < V4.1

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specifically designed packets to port 443/tcp of the affected SCALANCE devices, causing a Denial-of-Service condition.

Mitigation and Prevention

Protecting systems from CVE-2019-13925 is crucial to maintain security.

Immediate Steps to Take

Apply security patches provided by Siemens promptly.
Implement network segmentation to limit exposure to potential attacks.
Monitor network traffic for any suspicious activity targeting port 443/tcp.

Long-Term Security Practices

Regularly update and patch all SCALANCE devices to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Stay informed about security advisories from Siemens and apply patches as soon as they are released.