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RHEL 7 : policycoreutils (RHSA-2017:0536)

high Nessus Plugin ID 97769

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Synopsis

The remote Red Hat host is missing a security update for policycoreutils.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:0536 advisory.

 The policycoreutils packages contain the core policy utilities required to manage a SELinux environment.

 Security Fix(es):

 * It was found that the sandbox tool provided in policycoreutils was vulnerable to a TIOCSTI ioctl attack.
 A specially crafted program executed via the sandbox command could use this flaw to execute arbitrary commands in the context of the parent shell, escaping the sandbox. (CVE-2016-7545)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL policycoreutils package based on the guidance in RHSA-2017:0536.

See Also

http://www.nessus.org/u?0604ce9b

https://access.redhat.com/errata/RHSA-2017:0536

https://access.redhat.com/security/updates/classification/#important

https://bugzilla.redhat.com/show_bug.cgi?id=1378577

Plugin Details

Severity: High

ID: 97769

File Name: redhat-RHSA-2017-0536.nasl

Version: 3.9

Type: local

Agent: unix

Published: 3/16/2017

Updated: 11/5/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2016-7545

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:policycoreutils, p-cpe:/a:redhat:enterprise_linux:policycoreutils-python, p-cpe:/a:redhat:enterprise_linux:policycoreutils-sandbox, cpe:/o:redhat:rhel_eus:7.1, p-cpe:/a:redhat:enterprise_linux:policycoreutils-restorecond, p-cpe:/a:redhat:enterprise_linux:policycoreutils-devel, p-cpe:/a:redhat:enterprise_linux:policycoreutils-newrole, p-cpe:/a:redhat:enterprise_linux:policycoreutils-gui

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 3/15/2017

Vulnerability Publication Date: 1/19/2017

Reference Information

CVE: CVE-2016-7545

RHSA: 2017:0536