CVE-2016-7091 Information disclosure in n/a

Medium 4.4 Published Updated

Local users with sudo access can read sensitive files via readline INPUTRC manipulation, requiring a patch to mitigate information disclosure.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2016-7091?

CVE-2016-7091 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 22 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

sudo: It was discovered that the default sudo configuration on Red Hat Enterprise Linux and possibly other Linux implementations preserves the value of INPUTRC 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.

Weakness: CWE-200

Which versions are affected by CVE-2016-7091?

It affects 5 products.

Linux distribution packages (12)
sudo Red Hat:enterprise_linux:7::clientAll versions0:1.8.6p7-20.el7
sudo-debuginfo Red Hat:enterprise_linux:7::clientAll versions0:1.8.6p7-20.el7
sudo-devel Red Hat:enterprise_linux:7::clientAll versions0:1.8.6p7-20.el7
sudo Red Hat:enterprise_linux:7::computenodeAll versions0:1.8.6p7-20.el7
sudo-debuginfo Red Hat:enterprise_linux:7::computenodeAll versions0:1.8.6p7-20.el7
sudo-devel Red Hat:enterprise_linux:7::computenodeAll versions0:1.8.6p7-20.el7
sudo Red Hat:enterprise_linux:7::serverAll versions0:1.8.6p7-20.el7
sudo-debuginfo Red Hat:enterprise_linux:7::serverAll versions0:1.8.6p7-20.el7
sudo-devel Red Hat:enterprise_linux:7::serverAll versions0:1.8.6p7-20.el7
sudo Red Hat:enterprise_linux:7::workstationAll versions0:1.8.6p7-20.el7
sudo-debuginfo Red Hat:enterprise_linux:7::workstationAll versions0:1.8.6p7-20.el7
sudo-devel Red Hat:enterprise_linux:7::workstationAll versions0:1.8.6p7-20.el7

Products include Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Hpc Node, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation.

How do I fix CVE-2016-7091?

Apply the vendor's patch.

Is CVE-2016-7091 being exploited?

There is no known exploitation of CVE-2016-7091 in the wild and no public exploit code.

All Redhat Enterprise Linux vulnerabilities

Sources

Also known as GHSA-4h4j-rqc9-6rq3, RHSA-2016:2593.

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