CVE-2020-3283 Cisco Firepower 1000 Series SSL/TLS Denial of Service Vulnerability
Unauthenticated remote attackers can cause a denial of service on Cisco Firepower 1000 devices by sending crafted SSL/TLS messages, triggering a crash and 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-2020-3283?
CVE-2020-3283 is a high-severity denial of service vulnerability in Cisco Secure Firewall Threat Defense, published on 6 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Firepower Threat Defense (FTD) Software when running on the Cisco Firepower 1000 Series platform could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to a communication error between internal functions. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause a buffer underrun, which leads to a crash. The crash causes the affected device to reload.
Which versions are affected by CVE-2020-3283?
It affects 13 products.
Products include Cisco Asa 5505 Firmware, Cisco Asa 5510 Firmware, Cisco Asa 5512-X Firmware, Cisco Asa 5515-X Firmware, Cisco Asa 5520 Firmware, Cisco Asa 5525-X Firmware and 7 more.
How do I fix CVE-2020-3283?
No fix has been published for CVE-2020-3283 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-2020-3283 being exploited?
There is no known exploitation of CVE-2020-3283 in the wild and no public exploit code.
Other vulnerabilities in Cisco Secure Firewall Threat Defense
- CVE-2020-3179 Cisco Firepower Threat Defense Software Generic Routing Encapsulation Tunnel IPv6 Denial of Service Vulnerability
- CVE-2020-3189 Cisco Firepower Threat Defense Software VPN System Logging Denial of Service Vulnerability
- CVE-2020-3255 Cisco Firepower Threat Defense Software Packet Flood Denial of Service Vulnerability
- CVE-2020-3186 Cisco Firepower Threat Defense Software Management Access List Bypass Vulnerability
- CVE-2020-3188 Cisco Firepower Threat Defense Software Management Interface Denial of Service Vulnerability
Sources
Also known as GHSA-v2w7-xjpq-rmv5.