CVE-2017-20273 Joomlashowroom CVE debrief

Who should care

Defenders of Joomla Event Registration Pro Calendar 4.1.3 installations should prioritize patching or mitigating this vulnerability. CVSS score of 8.8 indicates high severity, suggesting immediate attention. Unaffected versions and workarounds should be evaluated.

Technical summary

CVE-2017-20273 is an SQL injection vulnerability in Joomla Event Registration Pro Calendar 4.1.3. The vulnerability allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the id parameter in GET requests to index.php with option=com_registrationpro&view=category&id. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. This vulnerability is classified under CWE-89.

Defensive priority

High priority due to CVSS score of 8.8 and potential for database exploitation.

Recommended defensive actions

• Apply official patches or updates for Joomla Event Registration Pro Calendar 4.1.3
• Review and restrict access to index.php with option=com_registrationpro&view=category&id
• Implement web application firewall (WAF) rules to detect and prevent SQL injection attempts
• Monitor for suspicious database activity and review logs for potential exploitation
• Consider temporary compensating controls if patching is not immediately feasible

Evidence notes

Primary evidence from CVE.org and NVD detail pages confirms the SQL injection vulnerability in Joomla Event Registration Pro Calendar 4.1.3. The vulnerability allows unauthenticated attackers to execute arbitrary SQL queries. Affected product/version/scope: Joomla Event Registration Pro Calendar 4.1.3. Defenders should verify the official CVE record and NVD details for accurate information.

Official resources