CVE-2021-20128 : Security Advisory and Response
Learn about CVE-2021-20128, a security flaw in Draytek VigorConnect 1.6.0-B3 enabling stored XSS attacks. Understand the impact, technical details, and mitigation steps.
Draytek VigorConnect 1.6.0-B3 is vulnerable to stored XSS due to improper sanitization of user inputs. This CVE poses a risk of cross-site scripting attacks.
Understanding CVE-2021-20128
This CVE highlights a security flaw in the Profile Name field within the Network Menu page of Draytek VigorConnect 1.6.0-B3, making it susceptible to stored XSS attacks.
What is CVE-2021-20128?
The Profile Name field in Draytek VigorConnect 1.6.0-B3 is not sanitizing user inputs correctly, leading to a vulnerability where attackers can execute malicious scripts in the context of an unsuspecting user's session.
The Impact of CVE-2021-20128
The vulnerability allows threat actors to inject and execute arbitrary scripts, potentially compromising sensitive user data, performing unauthorized actions, or phishing attacks.
Technical Details of CVE-2021-20128
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The stored XSS vulnerability in Draytek VigorConnect 1.6.0-B3 enables attackers to inject malicious scripts through the Profile Name field, capable of compromising user sessions.
Affected Systems and Versions
Draytek VigorConnect 1.6.0-B3 is identified as the affected version susceptible to this security loophole.
Exploitation Mechanism
By manipulating the Profile Name field, threat actors can inject scripts to be executed within a user's session, opening avenues for various attacks.
Mitigation and Prevention
To safeguard systems and data from CVE-2021-20128, immediate actions and long-term security measures are essential.
Immediate Steps to Take
Users must update Draytek VigorConnect to a patched version to mitigate the vulnerability. Additionally, monitoring for suspicious activities is crucial.
Long-Term Security Practices
Regular security audits, user input validation, and employee cybersecurity training can enhance protection against XSS attacks.
Patching and Updates
Regularly check for software updates and security advisories from the vendor to apply patches promptly and maintain system integrity.