CVE-2019-1669 : Exploit Details and Defense Strategies
Learn about CVE-2019-1669, a critical vulnerability in Cisco Firepower Threat Defense Software allowing remote attackers to bypass access control policies or cause a denial of service (DoS) by depleting system memory resources.
A vulnerability in the data acquisition (DAQ) component of Cisco Firepower Threat Defense (FTD) Software allows a remote attacker to bypass access control policies or cause a denial of service (DoS) by depleting system memory resources. This flaw affects Cisco Firepower Threat Defense Software.
Understanding CVE-2019-1669
This CVE involves a critical vulnerability in Cisco Firepower Threat Defense Software that could lead to a DoS attack or unauthorized bypass of access control policies.
What is CVE-2019-1669?
The vulnerability arises from improper memory resource management during traffic inspection by the affected software. Attackers can exploit this by creating specific traffic patterns for the software to analyze, depleting system memory resources used for traffic inspection.
The Impact of CVE-2019-1669
- Attack Complexity: Low
- Attack Vector: Network
- Base Score: 8.6 (High Severity)
- Integrity Impact: High
- Scope: Changed
- No user interaction or privileges required
- Can lead to DoS or unauthorized access
Technical Details of CVE-2019-1669
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw allows remote attackers to bypass access control policies or cause a DoS by exploiting memory resource mismanagement during traffic inspection.
Affected Systems and Versions
- Product: Cisco Firepower Threat Defense Software
- Vendor: Cisco
- Version: Not applicable
Exploitation Mechanism
Attackers can exploit the vulnerability by creating specific traffic patterns for the software to inspect, depleting system memory resources used for traffic analysis.
Mitigation and Prevention
Protecting systems from CVE-2019-1669 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by Cisco
- Monitor network traffic for any suspicious activity
- Implement access control lists to restrict unauthorized access
Long-Term Security Practices
- Regularly update and patch software and firmware
- Conduct security audits and assessments periodically
- Educate users on security best practices
Patching and Updates
- Cisco may release patches or updates to address the vulnerability
- Regularly check for security advisories from Cisco