CVE-2023-20267 Security feature bypass in Cisco Firepower Threat Defense Software

What is CVE-2023-20267?

CVE-2023-20267 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

A vulnerability in the IP geolocation rules of Snort 3 could allow an unauthenticated, remote attacker to potentially bypass IP address restrictions. This vulnerability exists because the configuration for IP geolocation rules is not parsed properly. An attacker could exploit this vulnerability by spoofing an IP address until they bypass the restriction. A successful exploit could allow the attacker to bypass location-based IP address restrictions.

Weakness: CWE-284

Which versions are affected by CVE-2023-20267?

It affects 1 product.

Products include Cisco Secure Firewall Threat Defense.

How do I fix CVE-2023-20267?

No fix has been published for CVE-2023-20267 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-20267 being exploited?

There is no known exploitation of CVE-2023-20267 in the wild and no public exploit code.

Other vulnerabilities in Cisco Secure Firewall Threat Defense

• CVE-2024-20412 Hardcoded credentials in Cisco Firepower Threat Defense Software Critical 9.3
• CVE-2024-20330 Memory corruption in Cisco Firepower Threat Defense Software High 8.6
• CVE-2024-20339 Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability High 8.6
• CVE-2024-20351 Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability High 8.6
• CVE-2023-20083 Denial of service in Cisco Firepower Threat Defense Software High 8.6

All Cisco Secure Firewall Threat Defense vulnerabilities

Sources

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

Also known as GHSA-8c85-2mj6-75qp.