High severity · published Feb 12, 2019
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…
8.8
CVSS
1.2%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeBSD · FreeBSD
FreeBSD 12.0 before 12.0-RELEASE-p3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-5596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-5596
packetstormsecurity.com
http://packetstormsecurity.com/files/155790/FreeBSD-fd-Privilege-Escalation.html
Patch
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:02.fd.asc
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