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CVE-2018-3989

4.3 · MEDIUM

An exploitable kernel memory disclosure vulnerability exists in the 0x8200E804 IOCTL handler functionality of WIBU-SYSTEMS WibuKey.sys Version 6.40 (Build 2400).A specially crafted IRP request can…

Published Feb 5, 2019CWE-908EPSS 0.57%

Overview

CVE-2018-3989 is a medium-severity vulnerability. It was published on February 5, 2019 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 4.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

An exploitable kernel memory disclosure vulnerability exists in the 0x8200E804 IOCTL handler functionality of WIBU-SYSTEMS WibuKey.sys Version 6.40 (Build 2400).A specially crafted IRP request can cause the driver to return uninitialized memory, resulting in kernel memory disclosure. An attacker can send an IRP request to trigger this vulnerability.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/107005Refcert-portal.siemens.com/productcert/pdf/ssa-760124.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-844562.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-902727.pdfReftalosintelligence.com/vulnerability_reports/TALOS-2018-0657Refwww.securityfocus.com/bid/107005Refcert-portal.siemens.com/productcert/pdf/ssa-760124.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-844562.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-902727.pdfReftalosintelligence.com/vulnerability_reports/TALOS-2018-0657

How CyberStrike helps

Frequently asked questions

What is CVE-2018-3989?

CVE-2018-3989 is a medium-severity vulnerability. It was published on February 5, 2019 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

How severe is CVE-2018-3989?

This vulnerability has a CVSS 3.0 base score of 4.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-3989?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-3989?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-3989 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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