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Vulnerability of FreeBSD: denial of service via pfctl

Synthesis of the vulnerability 

An attacker can trigger a fatal error via pfctl of FreeBSD, in order to trigger a denial of service.
Vulnerable products: FreeBSD.
Severity of this weakness: 1/4.
Creation date: 19/03/2020.
Références of this bulletin: FreeBSD-EN-20:04.pfctl, VIGILANCE-VUL-31836.

Description of the vulnerability 

An attacker can trigger a fatal error via pfctl of FreeBSD, in order to trigger a denial of service.
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This threat bulletin impacts software or systems such as FreeBSD.

Our Vigil@nce team determined that the severity of this computer threat bulletin is low.

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 computer threat.

Solutions for this threat 

FreeBSD: patch for pfctl.
A patch is available:
  https://security.FreeBSD.org/patches/EN-20:04/pfctl.patch
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