CVE-2018-11465 : What You Need to Know

A security flaw has been discovered in various versions of Siemens AG's SINUMERIK, including 808D V4.7, 808D V4.8, 828D V4.7, 840D sl V4.7, and 840D sl V4.8. This vulnerability could allow a local attacker to execute code at the kernel level without user interaction, potentially compromising system confidentiality, integrity, and availability.

Understanding CVE-2018-11465

This CVE identifies a security vulnerability in multiple versions of Siemens AG's SINUMERIK products.

What is CVE-2018-11465?

The vulnerability allows a local attacker to exploit ioctl calls for out of bounds reads, arbitrary writes, and code execution at the kernel level, posing a risk to system security.

The Impact of CVE-2018-11465

If successfully exploited, the vulnerability could lead to a compromise of system confidentiality, integrity, and availability. However, there are no known instances of public exploitation at the time of advisory publication.

Technical Details of CVE-2018-11465

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in SINUMERIK products allows local attackers to abuse ioctl calls for unauthorized actions at the kernel level.

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

Local attacker with user privileges can exploit the vulnerability using ioctl calls
No user interaction is required for successful exploitation

Mitigation and Prevention

Protect your systems from CVE-2018-11465 with these mitigation strategies.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly
Restrict access to vulnerable systems
Monitor and analyze system activity for signs of exploitation

Long-Term Security Practices

Implement the principle of least privilege for system access
Conduct regular security assessments and audits
Educate users on security best practices

Patching and Updates

Check Siemens AG's official security advisories for patch availability
Regularly update and maintain system software and firmware