CVE-2020-37106: Business Live Chat Software CSRF Flaw

CVE-2020-37106 Overview

Business Live Chat Software 1.0 contains a cross-site request forgery (CSRF) vulnerability that allows attackers to change user account roles without authentication. Attackers can craft a malicious HTML form to modify user privileges by submitting a POST request to the user creation endpoint with administrative access parameters. This vulnerability enables unauthorized privilege escalation through social engineering tactics.

Critical Impact

Attackers can escalate privileges and create administrative accounts without proper authorization by tricking authenticated users into visiting a malicious webpage.

Affected Products

• Business Live Chat Software 1.0
• BDTask Live Chat Software

Discovery Timeline

• 2026-02-07 - CVE CVE-2020-37106 published to NVD
• 2026-02-09 - Last updated in NVD database

Technical Details for CVE-2020-37106

Vulnerability Analysis

This vulnerability is classified as Cross-Site Request Forgery (CWE-352), a web application vulnerability that allows attackers to induce authenticated users to perform unintended actions. The Business Live Chat Software fails to implement proper CSRF protection tokens on sensitive administrative endpoints, specifically those related to user management and role assignment.

The attack requires user interaction, where an authenticated administrator must be tricked into visiting a malicious page containing a crafted form. Once triggered, the form automatically submits a request to the vulnerable endpoint, leveraging the victim's authenticated session to perform unauthorized actions such as creating new admin accounts or modifying existing user privileges.

Root Cause

The root cause of this vulnerability is the absence of CSRF token validation on the user creation and role modification endpoints. The application does not verify that requests originate from legitimate user interactions within the application's interface. Without anti-CSRF mechanisms such as synchronizer tokens, same-site cookie attributes, or origin header validation, the application cannot distinguish between legitimate requests and forged requests from malicious third-party sites.

Attack Vector

The attack vector is network-based and requires no prior authentication from the attacker's perspective. The attacker crafts a malicious HTML page containing a hidden form that targets the vulnerable user management endpoint. When an authenticated administrator visits this malicious page—whether through a phishing link, compromised website, or embedded iframe—the form automatically submits using JavaScript, sending a POST request to add a new administrative user or modify existing user roles.

The attack leverages the victim's active session cookies, which are automatically included by the browser in the forged request. Since the server lacks CSRF protection, it processes the request as legitimate, resulting in unauthorized privilege modification. For technical exploitation details, refer to the Exploit-DB #48141 advisory.

Detection Methods for CVE-2020-37106

Indicators of Compromise

• Unexpected administrative user accounts appearing in the system
• User role modifications without corresponding audit trail from legitimate admin actions
• Access logs showing POST requests to user management endpoints with unusual referrer headers or missing origin headers

Detection Strategies

• Monitor web server access logs for POST requests to user creation or role modification endpoints with external or suspicious referrer headers
• Implement alerting on new administrative account creation outside of established change management processes
• Review authentication logs for session activity patterns that indicate CSRF exploitation, such as rapid privilege changes without corresponding UI interaction

Monitoring Recommendations

• Enable detailed logging of all user management operations including source IP, session ID, and request headers
• Configure web application firewall (WAF) rules to detect and block requests lacking proper CSRF tokens
• Implement real-time alerting for any administrative privilege escalation events

How to Mitigate CVE-2020-37106

Immediate Actions Required

• Review all existing user accounts and roles for unauthorized modifications
• Implement network segmentation to restrict access to administrative endpoints from trusted networks only
• Consider temporarily disabling external access to the administrative interface until patches are applied
• Audit recent user creation and role modification activities for signs of exploitation

Patch Information

No vendor patch information is currently available for this vulnerability. Organizations should contact BDTask directly for security updates. Additional vulnerability details can be found in the VulnCheck CSRF Advisory and vendor product page at BDTask Live Chat Software.

Workarounds

• Implement a web application firewall (WAF) with CSRF protection rules to validate request origins and block suspicious cross-origin requests
• Configure SameSite=Strict or SameSite=Lax attributes on session cookies to prevent them from being sent with cross-origin requests
• Add custom middleware or reverse proxy rules to validate Origin and Referer headers on state-changing requests
• Restrict administrative interface access to specific IP ranges or require VPN connectivity

# Example Apache configuration to restrict admin access by IP
<Location "/admin">
    Order deny,allow
    Deny from all
    Allow from 10.0.0.0/8
    Allow from 192.168.1.0/24
</Location>