CVE-2019-10938 : Security Advisory and Response

A security flaw has been discovered in SIPROTEC 5 devices with CPU variants CP200, CP300, CP100, Siemens Power Meters Series 9410, and 9810, allowing unauthorized code injection and execution.

Understanding CVE-2019-10938

This CVE involves improper access control in Siemens devices, potentially enabling arbitrary code execution.

What is CVE-2019-10938?

Vulnerability in SIPROTEC 5 devices and Siemens Power Meters Series
Unauthorized network access may lead to code injection and execution
No reported public exploits at the time of advisory

The Impact of CVE-2019-10938

Risk of unauthorized code execution on affected devices
Potential compromise of device integrity and security

Technical Details of CVE-2019-10938

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Improper access control vulnerability
Allows unauthenticated attackers to insert and execute arbitrary code

Affected Systems and Versions

SIPROTEC 5 devices with CPU variants CP200 (All versions < V7.59)
SIPROTEC 5 devices with CPU variants CP300 and CP100 (All versions < V8.01)
Siemens Power Meters Series 9410 (All versions < V2.2.1)
Siemens Power Meters Series 9810 (All versions)

Exploitation Mechanism

Unauthorized network access required
Injection and execution of arbitrary code before firmware verification

Mitigation and Prevention

Protect your systems from CVE-2019-10938 with these mitigation strategies.

Immediate Steps to Take

Apply vendor-supplied patches or updates
Restrict network access to vulnerable devices
Monitor for any unauthorized code execution

Long-Term Security Practices

Regular security assessments and audits
Implement strong access control measures
Educate users on secure device practices

Patching and Updates

Check vendor advisories for patches
Keep devices up to date with the latest firmware and security fixes