CVE-2019-1669 Cisco Firepower Threat Defense Software Packet Inspection and Enforcement Bypass Vulnerability
Remote attackers can exhaust memory to bypass security policies or cause denial of service in Cisco Firepower Threat Defense software.
- 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-2019-1669?
CVE-2019-1669 is a high-severity denial of service vulnerability in Cisco Secure Firewall Threat Defense, published on 24 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the data acquisition (DAQ) component of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access control policies or cause a denial of service (DoS) condition. The vulnerability exists because the affected software improperly manages system memory resources when inspecting traffic. An attacker could exploit this vulnerability by generating specific traffic patterns for the software to inspect. A successful exploit could allow the attacker to exhaust system memory resources used for traffic inspection. Depending on the configuration, the FTD Software could fail open and cease to inspect traffic or fail closed and result in a DoS condition. This vulnerability may require manual intervention to restore the software.
Weakness: CWE-693
Which versions are affected by CVE-2019-1669?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2019-1669?
No fix has been published for CVE-2019-1669 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-2019-1669 being exploited?
There is no known exploitation of CVE-2019-1669 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-p2rm-qhff-72qf.