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CVE-2019-1019

8.5 · HIGH

A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages.

Published Jun 12, 2019CWE-200EPSS 15.12%

Overview

CVE-2019-1019 is a high-severity vulnerability. It was published on June 12, 2019 and has a CVSS 3.1 base score of 8.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages.

To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges.

The issue has been addressed by changing how NTLM validates network authentication messages.

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

Refmsrc.microsoft.com/update-guide/vulnerability/CVE-2019-1019Refpacketstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.htmlRefportal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019

How CyberStrike helps

Frequently asked questions

What is CVE-2019-1019?

CVE-2019-1019 is a high-severity vulnerability. It was published on June 12, 2019 and has a CVSS 3.1 base score of 8.5 (HIGH).

How severe is CVE-2019-1019?

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-1019?

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-2019-1019?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-1019 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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