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Synthesis of the vulnerability 
An attacker can force the usage of a freed memory area via UNIX-Domain Socket Rights Transmission of FreeBSD, in order to trigger a denial of service, and possibly to run code.
 Impacted systems: FreeBSD, pfSense.
Severity of this alert: 2/4.
Creation date: 25/07/2019.
Références of this alert: CVE-2019-5607, FreeBSD-SA-19:17.fd, VIGILANCE-VUL-29879.
Description of the vulnerability 
An attacker can force the usage of a freed memory area via UNIX-Domain Socket Rights Transmission of FreeBSD, in order to trigger a denial of service, and possibly to run code.
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This computer weakness alert impacts software or systems such as FreeBSD, pfSense.
Our Vigil@nce team determined that the severity of this weakness note is medium.
The trust level is of type confirmed by the editor, with an origin of user shell.
An attacker with a expert ability can exploit this weakness bulletin.
Solutions for this threat 
FreeBSD: patch for UNIX-Domain Socket Rights Transmission.
A patch is available:
FreeBSD 11.2: https://security.FreeBSD.org/patches/SA-19:17/fd.11.2.patch
FreeBSD 11.3: https://security.FreeBSD.org/patches/SA-19:17/fd.11.patch
FreeBSD 12.0: https://security.FreeBSD.org/patches/SA-19:17/fd.12.patch
pfSense: version 2.4.5.
The version 2.4.5 is fixed:
https://www.netgate.com/solutions/pfsense/
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Computer vulnerabilities tracking service 
Vigil@nce provides a cybersecurity note. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.
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