SQL Injection in Guardian Language-System

Executive Summary

This vulnerability exists in the Guardian language-system where the 'name' GET parameter is directly inserted into an unsanitized SQL query in the file designer.php at line 124.

Because the input is not sanitized, an authenticated attacker can exploit this by performing error-based SQL injection, allowing them to extract contents from the database.

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Detection Guidance

This vulnerability can be detected by testing the 'name' GET parameter in the designer.php file for SQL injection flaws. Since the parameter is passed directly into an unsanitized SQL query, sending specially crafted input that triggers SQL errors can reveal the vulnerability.

A common approach is to use tools or commands that send SQL injection payloads to the vulnerable parameter and observe the responses for database error messages or unexpected behavior.

• Use curl to send a test payload: curl "http://target/ designer.php?name='"
• Use sqlmap to automate detection: sqlmap -u "http://target/designer.php?name=test" --batch
• Manually test by appending SQL error-inducing characters such as single quotes or SQL syntax to the 'name' parameter and check for error messages in the response.

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Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive database information.

An attacker exploiting this SQL injection flaw can extract confidential data, potentially leading to data breaches, loss of data integrity, and disruption of services.

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Compliance Impact

The vulnerability allows an unauthenticated attacker to perform SQL injection and extract sensitive database contents. This exposure of sensitive data can lead to non-compliance with data protection regulations such as GDPR and HIPAA, which require the protection of personal and sensitive information from unauthorized access.

By enabling unauthorized data extraction, the vulnerability increases the risk of data breaches, which can result in legal and financial penalties under these standards.

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Mitigation Strategies

Immediate mitigation steps include sanitizing and validating the 'name' GET parameter to prevent SQL injection. This involves using parameterized queries or prepared statements instead of directly embedding user input into SQL queries.

Additionally, restrict access to the vulnerable designer.php file to authenticated and authorized users only, if possible, to reduce exposure.

If a patch or updated version of the Guardian language-system is available that fixes this issue, apply it as soon as possible.

As a temporary measure, consider implementing web application firewall (WAF) rules to detect and block SQL injection attempts targeting the 'name' parameter.

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