CVE-2020-3317 Cisco Firepower Threat Defense Software SSL Input Validation Denial of Service Vulnerability
An unauthenticated remote attacker can crash Snort instances by sending malformed TLS packets, causing a denial of service.
- 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-2020-3317?
CVE-2020-3317 is a medium-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 ssl_inspection component of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to crash Snort instances. The vulnerability is due to insufficient input validation in the ssl_inspection component. An attacker could exploit this vulnerability by sending a malformed TLS packet through a Cisco Adaptive Security Appliance (ASA). A successful exploit could allow the attacker to crash a Snort instance, resulting in a denial of service (DoS) condition.
Weakness: CWE-20
Which versions are affected by CVE-2020-3317?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2020-3317?
No fix has been published for CVE-2020-3317 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-2020-3317 being exploited?
There is no known exploitation of CVE-2020-3317 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-5p6j-prh7-gv7x.