CVE-2024-20339 Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability
Unauthenticated remote attackers can cause a denial of service by sending specific TLS traffic, crashing Cisco Firepower 2100 devices.
- 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-2024-20339?
CVE-2024-20339 is a high-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 TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an issue that occurs when TLS traffic is processed. An attacker could exploit this vulnerability by sending certain TLS traffic over IPv4 through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition and impacting traffic to and through the affected device.
Weakness: CWE-476
Which versions are affected by CVE-2024-20339?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2024-20339?
No fix has been published for CVE-2024-20339 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-20339 being exploited?
There is no known exploitation of CVE-2024-20339 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-2024-20351 Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
- CVE-2023-20083 Denial of service in Cisco Firepower Threat Defense Software
- CVE-2023-20244 Denial of service in Cisco Firepower Threat Defense Software
Sources
Also known as GHSA-7874-r67m-25qh.