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CVE-2019-10938 : Security Advisory and Response

Learn about CVE-2019-10938, a security flaw in SIPROTEC 5 devices and Siemens Power Meters Series, allowing unauthorized code injection. Find mitigation steps and prevention measures here.

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

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