FreeBSD : FreeBSD -- POSIX shm allows jails to access global namespace (5b1463dd-dab3-11e7-b5af-a4badb2f4699)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

Named paths are globally scoped, meaning a process located in one jail
can read and modify the content of POSIX shared memory objects created
by a process in another jail or the host system. Impact : A malicious
user that has access to a jailed system is able to abuse shared memory
by injecting malicious content in the shared memory region. This
memory region might be executed by applications trusting the shared
memory, like Squid.

This issue could lead to a Denial of Service or local privilege
escalation.

See also :

http://www.nessus.org/u?8723c0fc

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 105065 ()

Bugtraq ID:

CVE ID: CVE-2017-1087

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