CVE-2021-40973 : Security Advisory and Response
Discover the details of CVE-2021-40973, a cross-site scripting vulnerability in spotweb 1.5.1 and earlier versions, allowing remote attackers to inject malicious scripts and HTML. Learn about the impacted systems, exploitation mechanism, and mitigation steps.
This CVE-2021-40973 article provides details about a cross-site scripting vulnerability in spotweb 1.5.1 and below, allowing remote attackers to inject arbitrary web scripts or HTML.
Understanding CVE-2021-40973
This section delves into the specifics of the CVE-2021-40973 vulnerability.
What is CVE-2021-40973?
CVE-2021-40973 is a cross-site scripting (XSS) vulnerability found in templates/installer/step-004.inc.php in spotweb 1.5.1 and earlier versions. It enables malicious actors to inject unauthorized web scripts or HTML by utilizing the lastname parameter.
The Impact of CVE-2021-40973
The vulnerability poses a significant risk as remote attackers can execute arbitrary code within the context of the affected site, potentially leading to sensitive data theft, defacement, or other malicious activities.
Technical Details of CVE-2021-40973
Explore the technical aspects associated with CVE-2021-40973.
Vulnerability Description
The XSS vulnerability in spotweb 1.5.1 and below results from inadequate input sanitization in the lastname parameter, allowing attackers to insert malicious code that gets executed on the victim's browser.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions Affected: spotweb 1.5.1 and below
Exploitation Mechanism
The exploitation of CVE-2021-40973 involves sending crafted malicious input through the lastname parameter, which, when processed by the vulnerable component, leads to the execution of unauthorized scripts.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-40973.
Immediate Steps to Take
- Update spotweb to the latest version that contains a patch addressing the XSS vulnerability.
- Implement input validation mechanisms to sanitize user inputs effectively.
- Regularly monitor and audit web applications for security vulnerabilities.
Long-Term Security Practices
- Educate developers on secure coding practices to prevent XSS vulnerabilities.
- Consider implementing Content Security Policy (CSP) to reduce the impact of XSS attacks.
Patching and Updates
Regularly check for security updates and patches released by spotweb to address known vulnerabilities, including CVE-2021-40973.