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CVE-2017-8338

7.5 · HIGH

A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing…

Published May 18, 2017CWE-400EPSS 4.21%

Overview

CVE-2017-8338 is a high-severity vulnerability. It was published on May 18, 2017 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.

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

Refseclists.org/fulldisclosure/2017/May/59Refcxsecurity.com/issue/WLB-2017050062Refpacketstormsecurity.com/files/142538/MikroTik-RouterBoard-6.38.5-Denial-Of-Service.htmlRefwww.vulnerability-lab.com/get_content.php?id=2064Refseclists.org/fulldisclosure/2017/May/59Refcxsecurity.com/issue/WLB-2017050062Refpacketstormsecurity.com/files/142538/MikroTik-RouterBoard-6.38.5-Denial-Of-Service.htmlRefwww.vulnerability-lab.com/get_content.php?id=2064

How CyberStrike helps

Frequently asked questions

What is CVE-2017-8338?

CVE-2017-8338 is a high-severity vulnerability. It was published on May 18, 2017 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2017-8338?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-8338?

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-2017-8338?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-8338 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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