CVE-2018-11466 Explained : Impact and Mitigation

A security flaw has been discovered in various versions of Siemens AG's SINUMERIK software, including SINUMERIK 808D V4.7, SINUMERIK 808D V4.8, SINUMERIK 828D V4.7, SINUMERIK 840D sl V4.7, and SINUMERIK 840D sl V4.8. The vulnerability could lead to a Denial-of-Service situation or code execution within the software firewall context.

Understanding CVE-2018-11466

This CVE involves a security vulnerability in Siemens AG's SINUMERIK software that could be exploited by remote attackers.

What is CVE-2018-11466?

The vulnerability allows attackers to send specially crafted network packets to port 102/tcp, potentially causing a Denial-of-Service scenario or enabling code execution within the software firewall context.

The Impact of CVE-2018-11466

Attackers can exploit the vulnerability without requiring user privileges or interaction, compromising system confidentiality, integrity, and availability.
No reported instances of public exploitation have been documented as of the advisory publication date.

Technical Details of CVE-2018-11466

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw allows remote attackers to target specific versions of SINUMERIK software, potentially leading to a Denial-of-Service situation or code execution within the software firewall context.

Affected Systems and Versions

SINUMERIK 808D V4.7: All versions
SINUMERIK 808D V4.8: All versions
SINUMERIK 828D V4.7: All versions < V4.7 SP6 HF1
SINUMERIK 840D sl V4.7: All versions < V4.7 SP6 HF5
SINUMERIK 840D sl V4.8: All versions < V4.8 SP3

Exploitation Mechanism

Attackers with network access to affected systems on port 102/tcp can exploit the vulnerability without user privileges or interaction.

Mitigation and Prevention

Protecting systems from CVE-2018-11466 is crucial for maintaining security.

Immediate Steps to Take

Monitor network traffic on port 102/tcp for suspicious activities.
Apply vendor-supplied patches and updates promptly.

Long-Term Security Practices

Implement network segmentation to limit exposure to critical systems.
Conduct regular security assessments and penetration testing.

Patching and Updates

Siemens AG may release patches to address the vulnerability; ensure timely installation to mitigate risks.