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CentOS 7 : setroubleshoot / setroubleshoot-plugins (CESA-2016:1293)

high Nessus Plugin ID 91787

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

An update for setroubleshoot and setroubleshoot-plugins is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The setroubleshoot packages provide tools to help diagnose SELinux problems. When Access Vector Cache (AVC) messages are returned, an alert can be generated that provides information about the problem and helps to track its resolution.

The setroubleshoot-plugins package provides a set of analysis plugins for use with setroubleshoot. Each plugin has the capacity to analyze SELinux AVC data and system data to provide user friendly reports describing how to interpret SELinux AVC denials.

Security Fix(es) :

* Shell command injection flaws were found in the way the setroubleshoot executed external commands. A local attacker able to trigger certain SELinux denials could use these flaws to execute arbitrary code with privileges of the setroubleshoot user.
(CVE-2016-4989)

* Shell command injection flaws were found in the way the setroubleshoot allow_execmod and allow_execstack plugins executed external commands. A local attacker able to trigger an execmod or execstack SELinux denial could use these flaws to execute arbitrary code with privileges of the setroubleshoot user. (CVE-2016-4444, CVE-2016-4446)

The CVE-2016-4444 and CVE-2016-4446 issues were discovered by Milos Malik (Red Hat) and the CVE-2016-4989 issue was discovered by Red Hat Product Security.

Note: On Red Hat Enterprise Linux 7.0 and 7.1, the setroubleshoot is run with root privileges. Therefore, these issues could allow an attacker to execute arbitrary code with root privileges.

Solution

Update the affected setroubleshoot and / or setroubleshoot-plugins packages.

See Also

http://www.nessus.org/u?c44a8677

http://www.nessus.org/u?c77a5436

Plugin Details

Severity: High

ID: 91787

File Name: centos_RHSA-2016-1293.nasl

Version: 2.12

Type: local

Agent: unix

Published: 6/24/2016

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

CVSS Score Source: CVE-2016-4444

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:setroubleshoot-plugins, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:setroubleshoot-server, p-cpe:/a:centos:centos:setroubleshoot

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2016

Vulnerability Publication Date: 4/11/2017

Reference Information

CVE: CVE-2016-4444, CVE-2016-4446, CVE-2016-4989

RHSA: 2016:1293