CVE-2020-3571 Cisco Firepower 4110 ICMP Flood Denial of Service Vulnerability
Remote attackers can cause a denial of service on Cisco Firepower 4110 appliances by sending crafted ICMP packets, leading to memory exhaustion and device reload.
- 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-2020-3571?
CVE-2020-3571 is a high-severity denial of service vulnerability in Cisco Secure Firewall Threat Defense, published on 21 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the ICMP ingress packet processing of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 4110 appliances could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incomplete input validation upon receiving ICMP packets. An attacker could exploit this vulnerability by sending a high number of crafted ICMP or ICMPv6 packets to an affected device. A successful exploit could allow the attacker to cause a memory exhaustion condition that may result in an unexpected reload. No manual intervention is needed to recover the device after the reload.
Which versions are affected by CVE-2020-3571?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2020-3571?
No fix has been published for CVE-2020-3571 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-3571 being exploited?
There is no known exploitation of CVE-2020-3571 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-m34w-pwwr-wfrf.