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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeBSD | FreeBSD | FreeBSD 12.0 before 12.0-RELEASE-p3 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- FreeBSD-SA-19:02.fd - Privilege Escalation EDB-47829 · local · Dec 30, 2019 · verified
- FreeBSD 12.0 - 'fd' Local Privilege Escalation EDB-47081 · local · Jul 10, 2019
GitHub 1 repository
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raymontag/CVE-2019-5596 ★ 1 · Mar 29, 2023
Full LPE Exploit for CVE-2019-5596 / FreeBSD-SA-19:02.fd
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.