CVE-2019-5607: High severity freebsd kernel vulnerability

Published Jul 26, 2019

Updated

In FreeBSD 12.0-STABLE before r350222, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350223, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, rights transmitted over a domain socket did not properly release a reference on transmission error allowing a malicious user to cause the reference counter to wrap, forcing a free event. This could allow a malicious local user to gain root privileges or escape from a jail.

Affected Software

4 affected components

FreeBSD FreeBSD=11.0

FreeBSD FreeBSD=11.2

FreeBSD FreeBSD=11.3

FreeBSD FreeBSD=12.0

Event History

Jul 26, 2019

CVE Published

via MITRE·12:28 AM

Data Sourced

via MITRE·12:28 AM

DescriptionWeakness

Frequently Asked Questions

What is the severity of CVE-2019-5607?

CVE-2019-5607 has a medium severity rating due to potential rights escalation through domain socket transmission errors.

How do I fix CVE-2019-5607?

To fix CVE-2019-5607, users should update to FreeBSD versions 12.0-RELEASE-p8, 11.3-RELEASE-p1, or 11.2-RELEASE-p12 or later.

What types of systems are affected by CVE-2019-5607?

CVE-2019-5607 affects FreeBSD versions 11.0, 11.2, 11.3, and 12.0 prior to their respective patches.

What kind of vulnerability is CVE-2019-5607?

CVE-2019-5607 is a rights management vulnerability that allows unauthorized escalation through improper handling of domain socket operations.

Is there a workaround for CVE-2019-5607?

There is no documented workaround for CVE-2019-5607; applying the appropriate updates is recommended.