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

Medium Nessus Plugin ID 105065

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.

Solution

Update the affected packages.

See Also

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

Plugin Details

Severity: Medium

ID: 105065

File Name: freebsd_pkg_5b1463dddab311e7b5afa4badb2f4699.nasl

Version: $Revision: 3.2 $

Type: local

Published: 2017/12/07

Modified: 2018/02/01

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSSv3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD-kernel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Patch Publication Date: 2017/12/06

Vulnerability Publication Date: 2017/11/15

Reference Information

CVE: CVE-2017-1087

FreeBSD: SA-17:09.shm