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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.23% probability · 67th percentile
- CISA KEV
- Not listed
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
References
- http://packetstormsecurity.com/files/155790/FreeBSD-fd-Privilege-Escalation.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:02.fd.ascPatch, Third Party Advisory
- http://packetstormsecurity.com/files/155790/FreeBSD-fd-Privilege-Escalation.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:02.fd.ascPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.