CVE-2025-45777
📋 TL;DR
This vulnerability allows attackers to bypass authentication on Chavara Matrimony Site v2.0 by exploiting a flaw in the OTP mechanism. Attackers can gain unauthorized access to user accounts by sending specially crafted requests. All users of the affected matrimony site are potentially impacted.
💻 Affected Systems
- Chavara Family Welfare Centre Chavara Matrimony Site
📦 What is this software?
Chavara Matrimony by Abeltechsoft
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access, compromise all user accounts, steal sensitive personal data, and potentially deface or take down the entire matrimony platform.
Likely Case
Attackers compromise individual user accounts to access personal information, photos, and contact details, potentially leading to identity theft or harassment.
If Mitigated
With proper monitoring and rate limiting, unauthorized access attempts are detected and blocked, limiting successful exploitation.
🎯 Exploit Status
The GitHub reference suggests proof-of-concept code exists, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Contact vendor at https://www.chavaramatrimony.com/register-free for updates.
🔧 Temporary Workarounds
Implement Strong OTP Validation
allAdd server-side validation to ensure OTP codes are properly verified and cannot be bypassed via crafted requests.
Rate Limit OTP Requests
allImplement rate limiting on OTP verification endpoints to prevent brute force or automated exploitation attempts.
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block suspicious authentication bypass patterns.
- Monitor authentication logs for unusual patterns and implement alerting for failed OTP verification attempts.
🔍 How to Verify
Check if Vulnerable:
Test OTP authentication endpoint with crafted requests to see if authentication can be bypassed without valid OTP.Check Version:
Check website footer or about page for version information, typically displays 'v2.0'.Verify Fix Applied:
Verify that OTP validation cannot be bypassed and all authentication requests require valid, time-limited OTP codes.📡 Detection & Monitoring
Log Indicators:
- Multiple failed OTP attempts from single IP
- Successful authentication without OTP validation in logs
- Unusual authentication patterns
Network Indicators:
- HTTP requests to OTP endpoints with malformed parameters
- Rapid authentication attempts bypassing normal flow
SIEM Query:
source="web_logs" AND (uri_path="/otp-verify" OR uri_path="/authenticate") AND (status_code=200 OR status_code=302) AND NOT otp_validated="true"