CVE-2016-9686 Denial of service in Puppet Enterprise

What is CVE-2016-9686?

CVE-2016-9686 is a medium-severity denial of service vulnerability in Puppet Puppet Enterprise, published on 8 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes. An attacker could use this to crash the PCP Broker, preventing commands from being sent to agents. This is resolved in Puppet Enterprise 2016.4.3 and 2016.5.2.

Weakness: CWE-20

Which versions are affected by CVE-2016-9686?

It affects 1 product.

Products include Puppet Puppet Enterprise.

How do I fix CVE-2016-9686?

No fix has been published for CVE-2016-9686 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-9686 being exploited?

There is no known exploitation of CVE-2016-9686 in the wild and no public exploit code.

Other vulnerabilities in Puppet Puppet Enterprise

• CVE-2023-2530 Privilege escalation in Puppet Enterprise Critical 9.8
• CVE-2019-10694 Hardcoded credentials in Puppet Enterprise Critical 9.8
• CVE-2018-11749 Information disclosure in Puppet Enterprise Critical 9.8
• CVE-2021-27020 Other in Puppet Enterprise High 8.8
• CVE-2015-5686 Cross-site request forgery in n/a High 8.8

All Puppet Puppet Enterprise vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9pfr-f5q4-v4v8.