CVE-2018-14940 Denial of service in n/a

High 7.5 Published 5 Aug 2018 Updated 5 Aug 2024

Remote attackers can cause denial of service in PHPCMS by sending large parameters to the checkcode API, consuming server resources.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-14940?

CVE-2018-14940 is a high-severity denial of service vulnerability in n/a, published on 5 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PHPCMS 9 allows remote attackers to cause a denial of service (resource consumption) via large font_size, height, and width parameters in an api.php?op=checkcode request.

Weakness: CWE-400

Which versions are affected by CVE-2018-14940?

It affects 1 product.

Products include Phpcms Phpcms.

How do I fix CVE-2018-14940?

No fix has been published for CVE-2018-14940 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-2018-14940 being exploited?

There is no known exploitation of CVE-2018-14940 in the wild and no public exploit code.

Sources

Also known as GHSA-j479-rcfp-64jg.