CVE-2024-20407 Security feature bypass in Cisco Firepower Threat Defense Software
An unauthenticated remote attacker can bypass security policies on Cisco FTD devices using Snort 3 by exploiting a logic error in TCP Intercept handling.
- 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-2024-20407?
CVE-2024-20407 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense, published on 23 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are configured with Snort 2 are not affected by this vulnerability. This vulnerability is due to a logic error when handling embryonic (half-open) TCP connections. An attacker could exploit this vulnerability by sending a crafted traffic pattern through an affected device. A successful exploit could allow unintended traffic to enter the network protected by the affected device.
Weakness: CWE-399
Which versions are affected by CVE-2024-20407?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2024-20407?
No fix has been published for CVE-2024-20407 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-20407 being exploited?
There is no known exploitation of CVE-2024-20407 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
- CVE-2024-20330 Memory corruption in Cisco Firepower Threat Defense Software
- CVE-2024-20339 Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability
- CVE-2024-20351 Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
- CVE-2023-20083 Denial of service in Cisco Firepower Threat Defense Software
Sources
Also known as GHSA-6vh9-9qf6-mvjj.