CVE-2018-20798 Security feature bypass in n/a

High 7.5 Published 1 Mar 2019 Updated 5 Aug 2024

Incompatible block durations between pfSense and sshguard allow attackers to bypass intended access restrictions.

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-2018-20798?

CVE-2018-20798 is a high-severity vulnerability in n/a, published on 1 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The expiretable configuration in pfSense 2.4.4_1 establishes block durations that are incompatible with the block durations implemented by sshguard, which might make it easier for attackers to bypass intended access restrictions.

Weakness: CWE-732

Which versions are affected by CVE-2018-20798?

It affects 1 product.

Products include Netgate Pfsense.

How do I fix CVE-2018-20798?

No fix has been published for CVE-2018-20798 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-20798 being exploited?

There is no known exploitation of CVE-2018-20798 in the wild and no public exploit code.

Sources

Also known as GHSA-pjhq-f4xq-m288.