CVE-2020-10797 : Vulnerability Insights and Analysis
Learn about CVE-2020-10797, a Cross-Site Scripting (XSS) flaw in pfSense versions prior to 2.4.5, allowing attackers to execute malicious scripts. Find mitigation steps and preventive measures here.
A Cross-Site Scripting (XSS) vulnerability in the hostname field of the diag_ping.php page in pfSense before version 2.4.5 allows for potential exploitation by executing unsanitized commands.
Understanding CVE-2020-10797
This CVE entry highlights a security flaw in pfSense that could be leveraged for XSS attacks.
What is CVE-2020-10797?
The vulnerability exists in the hostname field of the diag_ping.php page in pfSense versions prior to 2.4.5. When commands are input and executed, the $result variable is not properly sanitized before being displayed, leaving room for XSS attacks.
The Impact of CVE-2020-10797
Exploitation of this vulnerability could lead to unauthorized script execution in a user's browser, potentially compromising sensitive data or performing malicious actions.
Technical Details of CVE-2020-10797
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The XSS vulnerability in pfSense before version 2.4.5 allows attackers to inject malicious scripts into the hostname field of the diag_ping.php page, leading to potential script execution in users' browsers.
Affected Systems and Versions
- Product: pfSense
- Vendor: Netgate
- Versions affected: Before 2.4.5
Exploitation Mechanism
Attackers can exploit this vulnerability by inputting malicious commands into the hostname field of the diag_ping.php page, taking advantage of the lack of sanitization in the $result variable.
Mitigation and Prevention
Protecting systems from CVE-2020-10797 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade pfSense to version 2.4.5 or newer to mitigate the vulnerability.
- Avoid inputting untrusted commands into the hostname field.
Long-Term Security Practices
- Regularly update and patch pfSense to address security vulnerabilities promptly.
- Educate users on safe browsing practices and the risks of executing untrusted commands.
Patching and Updates
Ensure that pfSense is regularly updated to the latest version to patch known vulnerabilities and enhance overall system security.