CVE-2021-41609 : Exploit Details and Defense Strategies
Discover how CVE-2021-41609 exposes a SQL injection risk in SelectSurvey.NET, enabling unauthorized access to backend data. Learn about mitigation steps.
SQL injection vulnerability in SelectSurvey.NET allows remote attackers to retrieve data from the backend database.
Understanding CVE-2021-41609
What is CVE-2021-41609?
SQL injection in the ID parameter of the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.000 allows a remote, unauthenticated attacker to retrieve data from the application's backend database via boolean-based blind and UNION injection.
The Impact of CVE-2021-41609
This vulnerability can be exploited by remote, unauthenticated attackers to access sensitive data stored in the application's backend database.
Technical Details of CVE-2021-41609
Vulnerability Description
The SQL injection vulnerability exists in the ID parameter of the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET.
Affected Systems and Versions
- Product: SelectSurvey.NET
- Versions affected: Before 5.052.000
Exploitation Mechanism
- Attackers can use boolean-based blind and UNION injection techniques to manipulate the ID parameter and retrieve data.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor.
- Implement input validation and parameterized queries to prevent SQL injection attacks.
- Regularly monitor and audit database activities for any suspicious behavior.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing.
- Keep software and applications up to date with the latest security patches.
Patching and Updates
- Upgrade SelectSurvey.NET to version 5.052.000 or later to mitigate the SQL injection vulnerability.