CVE-2019-6719 : Exploit Details and Defense Strategies

A vulnerability has been discovered in libIEC61850 version 1.3.1, involving a use-after-free flaw in the getState function.

Understanding CVE-2019-6719

This CVE entry pertains to a specific vulnerability found in libIEC61850 version 1.3.1.

What is CVE-2019-6719?

The vulnerability in libIEC61850 version 1.3.1 is related to a use-after-free flaw present in the getState function within mms/iso_server/iso_server.c. This flaw has been demonstrated in certain server example files.

The Impact of CVE-2019-6719

The use-after-free vulnerability in libIEC61850 version 1.3.1 could potentially lead to exploitation by malicious actors, compromising the security and integrity of systems utilizing this library.

Technical Details of CVE-2019-6719

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The vulnerability involves a use-after-free flaw in the getState function within the specified file paths.

Affected Systems and Versions

Affected Version: 1.3.1
Affected Function: getState in mms/iso_server/iso_server.c

Exploitation Mechanism

The vulnerability can be exploited by leveraging the use-after-free flaw in the getState function, as demonstrated in specific server example files.

Mitigation and Prevention

Protecting systems from CVE-2019-6719 requires immediate action and long-term security practices.

Immediate Steps to Take

Update to a patched version of libIEC61850 that addresses the use-after-free vulnerability.
Monitor for any unusual activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to ensure the latest security patches are applied.
Conduct security assessments and audits to identify and mitigate vulnerabilities proactively.

Patching and Updates

Ensure that all systems using libIEC61850 are updated to a version that includes a fix for the use-after-free flaw.