RHEL 7 : sudo (RHSA-2016:2593)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat 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.

See also :

https://www.redhat.com/security/data/cve/CVE-2016-7091.html
http://www.nessus.org/u?e4086253
http://rhn.redhat.com/errata/RHSA-2016-2593.html

Solution :

Update the affected sudo, sudo-debuginfo and / or sudo-devel packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N)
CVSS Temporal Score : 4.4
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 94556 ()

Bugtraq ID:

CVE ID: CVE-2016-7091

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