CVE-2015-20116 Next Click Ventures CVE debrief

Who should care

Defenders and administrators responsible for RealtyScript 4.0.2 deployments should assess exposure and prioritize remediation to prevent potential cross-site scripting attacks. This includes reviewing and updating incident response plans, implementing compensating controls, and verifying affected versions and deployments. Security teams should also focus on restricting file uploads and validating user input to mitigate the vulnerability.

Why it matters

CVE-2015-20116 is a stored cross-site scripting vulnerability in RealtyScript 4.0.2 that allows attackers to inject malicious scripts through CSV file upload filenames. Defenders should prioritize verifying and remediating this vulnerability to prevent potential cross-site scripting attacks.

• Potential for arbitrary JavaScript execution in users' browsers when the file is processed or displayed.
• Possible impact on user sessions and data integrity.
• Need for verification of affected versions and deployments.
• Priority for implementing compensating controls and monitoring.

Technical summary

RealtyScript 4.0.2 fails to properly sanitize CSV file uploads, allowing attackers to inject malicious scripts through filename parameters in multipart form data. This vulnerability enables attackers to execute arbitrary JavaScript in users' browsers when the file is processed or displayed, potentially impacting user sessions and data integrity. Defenders should prioritize verifying and remediating this vulnerability in RealtyScript 4.0.2 deployments, focusing on restricting file uploads and validating user input to prevent cross-site scripting attacks.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in RealtyScript 4.0.2 deployments, focusing on restricting file uploads and validating user input.

Recommended defensive actions

• Verify and remediate RealtyScript 4.0.2 deployments to restrict file uploads and validate user input.
• Implement additional security measures to monitor and protect against potential attacks.
• Review and update incident response plans to address potential cross-site scripting attacks.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description and affected versions. However, additional information on exploitation, impact, and remediation is limited.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.