What is CVE-2019-5596?

CVE-2019-5596 is a high-severity vulnerability in Freebsd. CVSS score: 8.8/10. Published 2019-02-12.

How severe is CVE-2019-5596?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2019-5596 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Freebsd

CVE-2019-5596

In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to gain root privileges or escape from a jail.

EPSS: 0.012 (65.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Freebsd — versions 12.0, 11.2, FreeBSD 12.0 before 12.0-RELEASE-p3

Public proof-of-concept exploits

References

secteam@freebsd.org (x_refsource_FREEBSD, vendor-advisory, Patch, Third Party Advisory)
secteam@freebsd.org (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-5596?: CVE-2019-5596 is a high-severity vulnerability in Freebsd. CVSS score: 8.8/10. Published 2019-02-12.
How severe is CVE-2019-5596?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2019-5596 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.