CVE-2017-20253: Joomla! My Projects 2.0 Unauthenticated SQL Injection Vulnerability

Technical summary

CVE-2017-20253 is an unauthenticated SQL injection vulnerability in Joomla! Component My Projects 2.0. The vulnerability stems from insufficient input validation on the VerAyari parameter, which is processed directly in SQL queries without proper sanitization or parameterized query protection (CWE-89). This allows attackers to bypass authentication and inject SQL metacharacters to alter query logic, extract data, or potentially modify database contents. The CVSS 3.1 score of 8.2 (HIGH) reflects the high impact on confidentiality with low attack complexity and no authentication requirements.

Business impact

Organizations running Joomla! with the My Projects 2.0 component face immediate risk of unauthorized database access. Attackers can exfiltrate sensitive data—including user credentials, client information, project details, and system configuration—without leaving complex forensic traces. This exposure could lead to secondary compromise of user accounts, regulatory violations if personal data is extracted, and erosion of customer trust. The lack of authentication requirement means any internet-facing instance is accessible to potential threat actors.

Affected systems

Joomla! installations using Component My Projects version 2.0. Organizations should inventory all instances of this component, particularly those accessible from the internet or handling sensitive project data. The vulnerability applies regardless of Joomla! core version, as it is specific to the third-party component itself.

Exploitability

This vulnerability is highly exploitable due to the absence of authentication requirements and straightforward attack vector. An attacker needs only network access to craft a malicious HTTP request with SQL injection payloads in the VerAyari parameter. No special tools or social engineering are required; basic SQL injection techniques can extract data within moments of discovery. The simplicity of exploitation and public disclosure increase the likelihood of rapid weaponization.

Remediation

Immediately disable or remove the My Projects 2.0 component if it is not actively required. If the component is essential to operations, verify against the vendor's security advisory for patched versions. Apply any available security updates from the component developer, test in a non-production environment first, and confirm functionality before production deployment. If no patch is available, consider alternative project management solutions or implement strict network access controls to limit exposure.

Patch guidance

Check the official Joomla! extension repository and the My Projects component developer's website for available security updates beyond version 2.0. Verify the specific patched version number against the vendor advisory before applying. Follow the component's documented update procedure, which typically involves backing up the installation, uploading the updated component files, and running any necessary database migrations. Test the update on a staging system to confirm compatibility with your Joomla! configuration.

Detection guidance

Monitor for unusual database query patterns, authentication bypass attempts, or HTTP requests containing SQL metacharacters (single quotes, semicolons, or SQL keywords) in the VerAyari parameter. Web application firewalls (WAF) should be configured to block or alert on SQL injection signatures targeting this parameter. Review access logs for requests to the My Projects component endpoint from unexpected sources or during off-hours. Database query audit logs may reveal suspicious SELECT, UNION, or information schema queries executed by unprivileged accounts.

Why prioritize this

This vulnerability warrants immediate attention due to the combination of high CVSS score (8.2), complete lack of authentication barriers, and trivial exploitation complexity. The potential for rapid data exfiltration and the likelihood that any public-facing instance will be discovered and attacked within days of broad awareness make this a critical patching priority. Organizations using this component should treat remediation as an emergency activity.

Risk score, explained

The CVSS 3.1 score of 8.2 reflects a HIGH severity rating based on: (1) network-accessible attack vector with low complexity, (2) no privilege or user interaction required, (3) high confidentiality impact from unauthorized database access, and (4) low integrity impact from potential data modification. The score appropriately captures the severe risk to sensitive information without assuming availability disruption (the vulnerability does not inherently cause denial of service).

Frequently asked questions