Executive Summary

CVE-2017-20262 is a SQL injection vulnerability found in Joomla! Component Ajax Quiz version 1.8 or earlier.

This vulnerability allows unauthenticated attackers to inject malicious SQL code through the 'cid' parameter by sending specially crafted GET requests to the application.

By exploiting this flaw, attackers can execute arbitrary SQL queries on the backend database, potentially extracting sensitive information such as table names and column structures.

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Impact Analysis

The impact of this vulnerability includes unauthorized access to sensitive database information.

• Attackers can extract database schema details like table names and column structures.
• It may lead to data leakage or unauthorized data manipulation.
• Since the vulnerability requires no authentication, any remote attacker can exploit it.

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Detection Guidance

This vulnerability can be detected by monitoring for suspicious GET requests targeting the vulnerable Joomla! component. Specifically, look for requests to 'index.php' with the parameters 'option=com_ajaxquiz' and 'view=ajaxquiz' that include unusual or malicious input in the 'cid' parameter.

A simple detection command using curl to test for SQL injection might be:

• curl -i "http://[target]/index.php?option=com_ajaxquiz&view=ajaxquiz&cid=1' OR '1'='1"

If the response contains database errors or unexpected data, it may indicate the presence of the vulnerability.

Additionally, network intrusion detection systems (NIDS) can be configured to alert on such suspicious parameter patterns targeting 'com_ajaxquiz'.

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Mitigation Strategies

Immediate mitigation steps include:

• Disable or uninstall the vulnerable Joomla! Component Ajax Quiz version 1.8 or earlier.
• Apply any available patches or updates provided by the component developer or Joomla! to fix the SQL injection vulnerability.
• Restrict access to the vulnerable component by limiting HTTP requests to trusted users or IP addresses if possible.
• Implement web application firewall (WAF) rules to block malicious requests targeting the 'cid' parameter in 'com_ajaxquiz'.

These steps help prevent exploitation while a permanent fix or update is applied.

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Compliance Impact

The SQL injection vulnerability in Joomla! Component Ajax Quiz 1.8 allows attackers to extract sensitive database information, which could include personal or protected data.

Such unauthorized access to sensitive data can lead to non-compliance with data protection regulations like GDPR and HIPAA, which require safeguarding personal and health information against breaches.

Therefore, exploitation of this vulnerability could result in violations of these standards due to exposure or compromise of confidential data.

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