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CVE-2019-5611

7.5 · HIGH

In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing che…

Published Aug 30, 2019CWE-20EPSS 4.42%

Overview

CVE-2019-5611 is a high-severity vulnerability. It was published on August 30, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 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

In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing check in the function to arrange data in a chain of mbufs could cause data returned not to be contiguous. Extra checks in the IPv6 stack could catch the error condition and trigger a kernel panic, leading to a remote denial of service.

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

Refpacketstormsecurity.com/files/154170/FreeBSD-Security-Advisory-FreeBSD-SA-19-22.mbuf.htmlRefseclists.org/bugtraq/2019/Aug/33Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascRefsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascRefsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascRefsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascRefsecurity.netapp.com/advisory/ntap-20190910-0002/Refpacketstormsecurity.com/files/154170/FreeBSD-Security-Advisory-FreeBSD-SA-19-22.mbuf.htmlRefseclists.org/bugtraq/2019/Aug/33Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.asc

How CyberStrike helps

Frequently asked questions

What is CVE-2019-5611?

CVE-2019-5611 is a high-severity vulnerability. It was published on August 30, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2019-5611?

This vulnerability has a CVSS 3.1 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-2019-5611?

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-2019-5611?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-5611 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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