Home/CVE/In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEAS
CVE

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-RELEAS

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.

HIGH · CVSS 8.8 EPSS 0.00157
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  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

1
freebsdall versions
⚠

Public Exploits & PoCs

3
localFreeBSD-SA-19:02.fd - Privilege Escalationverified
localFreeBSD 12.0 - 'fd' Local Privilege Escalation2019-07-10
pocpacketstormsecurity.com · FreeBSD-fd-Privilege-Escalation.htmlpacketstormsecurity.com
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Scoring & Timeline

8.8
HIGH · CVSS v3.0 · secteam@freebsd.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Feb 2019 · 05:29 AM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:02.fd.ascPatchThird Party Advisory
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