CVE-2019-1669: Cisco Firepower Threat Defense Software Packet Inspection and Enforcement Bypass Vulnerability
First published: Thu Jan 24 2019(Updated: )
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.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Secure Firewall Threat Defense | =6.3.0 | |
| Cisco Secure Firewall Threat Defense | =6.4.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-1669?
CVE-2019-1669 is considered a high severity vulnerability as it can be exploited by unauthenticated attackers to bypass access controls or cause a denial of service.
How do I fix CVE-2019-1669?
To fix CVE-2019-1669, you should upgrade to a patched version of Cisco Firepower Threat Defense that addresses this vulnerability.
What systems are affected by CVE-2019-1669?
CVE-2019-1669 affects specific versions of Cisco Firepower Threat Defense, namely 6.3.0 and 6.4.0.
Can CVE-2019-1669 be exploited remotely?
Yes, CVE-2019-1669 can be exploited remotely by attackers without authentication.
What are the potential impacts of CVE-2019-1669?
The potential impacts of CVE-2019-1669 include unauthorized access to systems and possible denial of service conditions.
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