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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.012 (67.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- FreeBSD — versions 12.0, 11.2, FreeBSD 12.0 before 12.0-RELEASE-p3
Public proof-of-concept exploits
References
- security.FreeBSD.org/advisories/FreeBSD-SA-19:02.fd.asc (vendor-advisory, Patch, Third Party Advisory)
- packetstormsecurity.com/files/155790/FreeBSD-fd-Privilege-Escalation.html
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.