CVE-2018-0087 : Vulnerability Insights and Analysis
Learn about CVE-2018-0087, a vulnerability in the FTP server of Cisco Web Security Appliance allowing unauthorized access without a valid password. Find mitigation steps and affected systems.
A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow unauthorized access to the device's FTP server without a valid password.
Understanding CVE-2018-0087
This CVE identifies a flaw in the FTP server of the Cisco Web Security Appliance that could potentially lead to unauthorized access.
What is CVE-2018-0087?
The vulnerability allows an attacker to gain entry to the Cisco WSA's FTP server without a valid password, provided they have a valid username. It arises from improper validation of FTP user credentials.
The Impact of CVE-2018-0087
- Unauthorized individuals could access the device's FTP server without a valid password
- Attackers can exploit this vulnerability by using FTP to connect to the device's management IP address
- Affected systems include virtual and hardware appliances running any release of Cisco AsyncOS 10.5.1 for WSA Software
Technical Details of CVE-2018-0087
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The flaw in the FTP server of the Cisco Web Security Appliance allows unauthorized access without a valid password, contingent on a valid username.
Affected Systems and Versions
- Product: Cisco Web Security Appliance
- Versions: Cisco Web Security Appliance
Exploitation Mechanism
- Attackers exploit the vulnerability by using FTP to connect to the management IP address of the targeted device
- Successful exploitation grants access to the Cisco WSA's FTP server without requiring a valid password
Mitigation and Prevention
Protecting systems from this vulnerability involves taking immediate steps and implementing long-term security practices.
Immediate Steps to Take
- Disable FTP on the management interface if not required
- Regularly monitor and audit FTP access
Long-Term Security Practices
- Implement strong password policies
- Conduct regular security assessments and audits
Patching and Updates
- Apply patches and updates provided by Cisco to address the vulnerability