CVE-2023-20071 Security feature bypass in Cisco Cyber Vision

Medium 5.8 Published 1 Nov 2023 Updated 2 Aug 2024

Unauthenticated remote attackers can bypass FTP inspection policies in Cisco Snort engines by sending crafted FTP traffic, allowing malicious payload delivery.

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-2023-20071?

CVE-2023-20071 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense, published on 1 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.

Weakness: CWE-1039

Which versions are affected by CVE-2023-20071?

It affects 4 products.

Products include Cisco Cyber Vision, Cisco Meraki Mx Security Appliance Firmware, Cisco Secure Firewall Threat Defense, Cisco Unified Threat Defense.

How do I fix CVE-2023-20071?

No fix has been published for CVE-2023-20071 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-20071 being exploited?

There is no known exploitation of CVE-2023-20071 in the wild and no public exploit code.

All Cisco Secure Firewall Threat Defense vulnerabilities

Sources

Also known as GHSA-54ph-4xc5-8pjx.