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CentOS 7 : sudo (CESA-2016:2593)
medium Nessus Plugin ID 95339
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Synopsis
The remote CentOS host is missing one or more security updates.Description
An update for sudo is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impact of Low. 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 sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es) :
* It was discovered that the default sudo configuration preserved the value of INPUTRC from the user's environment, which could lead to information disclosure. A local user with sudo access to a restricted program that uses readline could use this flaw to read content from specially formatted files with elevated privileges provided by sudo.
(CVE-2016-7091)
Note: With this update, INPUTRC was removed from the env_keep list in /etc/ sudoers to avoid having sudo preserve the value of this variable when invoking privileged commands.
Red Hat would like to thank Grisha Levit for reporting this issue.
Additional Changes :
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.
Solution
Update the affected sudo packages.See Also
Plugin Details
Severity: Medium
ID: 95339
File Name: centos_RHSA-2016-2593.nasl
Version: 3.8
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 11/28/2016
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: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.9
Temporal Score: 3.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2016-7091
CVSS v3
Risk Factor: Medium
Base Score: 4.4
Temporal Score: 3.9
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:sudo-devel, p-cpe:/a:centos:centos:sudo
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 11/25/2016
Vulnerability Publication Date: 12/22/2016
Reference Information
CVE: CVE-2016-7091
RHSA: 2016:2593