CVE-2019-12673 : Security Advisory and Response
Learn about CVE-2019-12673, a vulnerability in Cisco ASA Software and Firepower Threat Defense Software allowing DoS attacks. Find mitigation steps and prevention measures here.
A vulnerability in the FTP inspection engine of Cisco's Adaptive Security (ASA) Software and Firepower Threat Defense (FTD) Software has been identified, potentially allowing unauthorized remote attackers to disrupt device functionality, leading to a denial of service (DoS) situation.
Understanding CVE-2019-12673
This CVE involves a flaw in the FTP inspection engine of Cisco's ASA Software and FTD Software, posing a risk of DoS attacks.
What is CVE-2019-12673?
The vulnerability stems from inadequate verification of FTP data, enabling attackers to exploit the flaw by sending malicious FTP traffic through compromised devices.
The Impact of CVE-2019-12673
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Base Score: 8.6 (High Severity)
- Scope: Changed
- Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Technical Details of CVE-2019-12673
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw allows unauthorized remote attackers to disrupt device functionality, potentially causing a DoS situation.
Affected Systems and Versions
- Product: Cisco Adaptive Security Appliance (ASA) Software
- Vendor: Cisco
- Versions: Unspecified
Exploitation Mechanism
To exploit the vulnerability, attackers need to send malicious FTP traffic through compromised devices, leading to a DoS condition.
Mitigation and Prevention
Protecting systems from CVE-2019-12673 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious FTP activities.
Long-Term Security Practices
- Regularly update and patch software and firmware.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and administrators on best security practices.
- Implement intrusion detection and prevention systems.
Patching and Updates
Regularly check for security advisories from Cisco and apply patches as soon as they are released.