CVE-2016-7035 Missing authorization in pacemaker

High 8.8 Published 10 Sep 2018 Updated 6 Aug 2024

An unprivileged local attacker can exploit an IPC authorization flaw in Pacemaker to execute scripts as root, gaining full system control.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2016-7035?

CVE-2016-7035 is a high-severity missing authorization vulnerability in Redhat Enterprise Linux Server, published on 10 Sep 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An authorization flaw was found in Pacemaker before 1.1.16, where it did not properly guard its IPC interface. An attacker with an unprivileged account on a Pacemaker node could use this flaw to, for example, force the Local Resource Manager daemon to execute a script as root and thereby gain root access on the machine.

Weakness: CWE-285

Which versions are affected by CVE-2016-7035?

It affects 3 products.

Linux distribution packages (19)

`pacemaker` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-cli` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-cluster-libs` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-cts` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-doc` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-libs` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-libs-devel` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker-remote` Red Hat:enterprise_linux:6::server	All versions	`0:1.1.14-8.el6_8.2`
`pacemaker` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-cli` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-cluster-libs` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-cts` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-doc` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-libs` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-libs-devel` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-nagios-plugins-metadata` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`
`pacemaker-remote` Red Hat:enterprise_linux:7::server	All versions	`0:1.1.15-11.el7_3.2`

Products include Clusterlabs Pacemaker, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Eus.

How do I fix CVE-2016-7035?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2016-7035 being exploited?

There is no known exploitation of CVE-2016-7035 in the wild and no public exploit code.

All Redhat Enterprise Linux Server vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-7035, GHSA-5wmv-gcg2-v47h, RHSA-2016:2614, RHSA-2016:2675, UBUNTU-CVE-2016-7035.