CVE-2022-31140
📋 TL;DR
This vulnerability in the Valinor PHP library allows attackers to extract sensitive information from error messages that should not be exposed. Attackers can obtain database credentials, SQL queries, system details, and other confidential data through crafted inputs. Any PHP application using Valinor versions before 0.12.0 is affected.
💻 Affected Systems
- Valinor PHP library
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full database credential disclosure leading to complete system compromise, sensitive data exfiltration, and potential lateral movement within the infrastructure.
Likely Case
Exposure of database connection strings, SQL queries, or system error details that could facilitate SQL injection, enumeration attacks, or targeted exploitation.
If Mitigated
Limited information disclosure with no direct system access, though exposed details could still aid reconnaissance for other attacks.
🎯 Exploit Status
Exploitation requires triggering error conditions that reveal sensitive information through error messages.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.12.0
Vendor Advisory: https://github.com/CuyZ/Valinor/security/advisories/GHSA-5pgm-3j3g-2rc7
Restart Required: No
Instructions:
1. Update Valinor to version 0.12.0 or later via Composer: composer require cuyz/valinor:^0.12.0
2. Verify the update completed successfully
3. Test application functionality to ensure compatibility
🔧 Temporary Workarounds
Disable detailed error reporting
allConfigure PHP to suppress detailed error messages in production environments
php.ini: display_errors = Off
php.ini: log_errors = On
php.ini: error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
Implement custom error handler
allOverride default error handling to sanitize error messages before display
set_error_handler(function($errno, $errstr, $errfile, $errline) { return sanitize_error($errstr); });
🧯 If You Can't Patch
- Implement strict input validation and sanitization to prevent triggering error conditions
- Deploy web application firewall (WAF) rules to detect and block suspicious error message patterns
🔍 How to Verify
Check if Vulnerable:
Check composer.json or run: composer show cuyz/valinor | grep versionCheck Version:
composer show cuyz/valinor | grep versionVerify Fix Applied:
Confirm version is 0.12.0 or higher: composer show cuyz/valinor📡 Detection & Monitoring
Log Indicators:
- Error logs containing database credentials, SQL queries, or system paths
- Unusually high rate of error responses from Valinor endpoints
Network Indicators:
- HTTP responses containing detailed error messages with sensitive information
- Patterns of crafted requests designed to trigger specific errors
SIEM Query:
source="web_logs" AND (message="*database*" OR message="*password*" OR message="*SQL*" OR message="*exception*") AND status_code>=500