CVE-2020-3547 : Vulnerability Insights and Analysis
Learn about CVE-2020-3547, an information disclosure vulnerability in Cisco Email Security Appliance, Content Security Management Appliance, and Web Security Appliance. Find mitigation steps and prevention measures here.
A vulnerability in the web-based management interface of Cisco AsyncOS software for Cisco Email Security Appliance (ESA), Cisco Content Security Management Appliance (SMA), and Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to access sensitive information on an affected device.
Understanding CVE-2020-3547
This CVE involves an information disclosure vulnerability in Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco Web Security Appliance.
What is CVE-2020-3547?
The vulnerability arises from an insecure method used to mask certain passwords on the web-based management interface, potentially enabling attackers to view sensitive information by inspecting the raw HTML code.
The Impact of CVE-2020-3547
If successfully exploited, attackers could access passwords configured throughout the interface, compromising the confidentiality of the affected systems.
Technical Details of CVE-2020-3547
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows authenticated remote attackers to access sensitive information due to the insecure password masking method on the web-based management interface.
Affected Systems and Versions
- Product: Cisco Web Security Appliance (WSA)
- Vendor: Cisco
- Versions: Not applicable (n/a)
Exploitation Mechanism
Attackers can exploit the vulnerability by examining the raw HTML code received from the interface, potentially obtaining passwords configured within the system.
Mitigation and Prevention
Protecting systems from CVE-2020-3547 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Cisco promptly.
- Monitor network traffic for any suspicious activities.
- Restrict access to the web-based management interface.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Conduct security training for employees to recognize and report phishing attempts.
- Implement strong password policies and multi-factor authentication.
Patching and Updates
Cisco may release patches to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.