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CVE-2019-14867 : Vulnerability Insights and Analysis

Discover the impact of CVE-2019-14867, a high-severity vulnerability in IPA servers by Red Hat. Learn about affected versions, exploitation risks, and mitigation steps.

A vulnerability has been discovered in IPA affecting versions 4.6.x, 4.7.x, and 4.8.x before specific versions. The flaw involves incorrect usage of the internal function ber_scanf() in certain components of the IPA server, potentially leading to server crashes or arbitrary code execution.

Understanding CVE-2019-14867

This CVE identifies a security vulnerability in Red Hat's IPA versions 4.6.x, 4.7.x, and 4.8.x.

What is CVE-2019-14867?

CVE-2019-14867 is a vulnerability in IPA servers that could allow an unauthorized attacker to crash the server or execute arbitrary code by exploiting the ber_scanf() function in the server's components.

The Impact of CVE-2019-14867

The vulnerability has a CVSS v3.0 base score of 8.8, indicating a high severity issue with significant impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2019-14867

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw in IPA versions 4.6.x, 4.7.x, and 4.8.x involves the incorrect usage of ber_scanf() during the parsing of kerberos key data, potentially leading to server crashes or arbitrary code execution.

Affected Systems and Versions

        All IPA 4.6.x versions before 4.6.7
        All IPA 4.7.x versions before 4.7.4
        All IPA 4.8.x versions before 4.8.3

Exploitation Mechanism

The vulnerability can be exploited by an unauthorized attacker triggering the parsing of the krb principal key, causing the IPA server to crash or execute arbitrary code on the hosting server.

Mitigation and Prevention

Protecting systems from CVE-2019-14867 requires immediate actions and long-term security practices.

Immediate Steps to Take

        Apply the recommended patches provided by Red Hat to mitigate the vulnerability.
        Monitor for any unusual activities on IPA servers that could indicate exploitation.

Long-Term Security Practices

        Regularly update IPA servers to the latest versions to ensure security patches are applied promptly.
        Conduct security assessments and audits to identify and address any potential vulnerabilities.

Patching and Updates

Red Hat has released patches to address CVE-2019-14867. Ensure all affected IPA servers are updated to versions 4.6.7, 4.7.4, and 4.8.3 or later to eliminate the vulnerability.

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