CVE-2023-27100 Security feature bypass in n/a

Critical 9.8 Published Updated

Attackers can bypass SSHGuard brute force protection in pfSense via crafted web requests, allowing continued authentication attempts.

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-2023-27100?

CVE-2023-27100 is a critical vulnerability in n/a, published on 22 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Improper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus software v22.05.1 and pfSense CE software v2.6.0 allows attackers to bypass brute force protection mechanisms via crafted web requests.

Weakness: CWE-307

Which versions are affected by CVE-2023-27100?

It affects 2 products.

Products include Netgate Pfsense Plus, Pfsense Pfsense.

How do I fix CVE-2023-27100?

No fix has been published for CVE-2023-27100 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-27100 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-27100 exists.

Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.

Sources

Also known as GHSA-wmh3-5pfq-qpp8.

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