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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: A critical **PHP Object Injection** flaw in the RegistrationMagic plugin. 📉 **Consequences**: Attackers can execute arbitrary code, leading to full server compromise, data theft, and site defacement.…
🛡️ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). 🐛 **Flaw**: The `is_expired_by_date` function fails to validate input before passing it to PHP's `unserialize()`.…
🏢 **Vendor**: Metagauss. 📦 **Product**: RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login. 📅 **Affected**: Versions **prior to 3.7.9.3**.
Q4What can hackers do? (Privileges/Data)
💀 **Attacker Capabilities**: Full **Remote Code Execution (RCE)**. 📂 **Impact**: Complete access to server files, database credentials, and user data.…
🔥 **Exploitation**: **YES**. 📰 **Evidence**: References confirm **wild exploitation** in the wild (WordFence Intel). Public PoCs and active attacks were reported in October 2017. It is a known 3-day zero-day at the time.
Q7How to self-check? (Features/Scanning)
🔍 **Self-Check**: 1. Check WordPress plugin list for **RegistrationMagic**. 2. Verify version is **< 3.7.9.3**. 3. Scan for `unserialize()` calls in `is_expired_by_date` function. 4.…
🛠️ **Fix**: **YES**. ✅ **Patch**: Update to version **3.7.9.3** or later. 📝 **Source**: Official WordPress SVN changeset #1733274 addresses the input validation issue.
Q9What if no patch? (Workaround)
🚧 **No Patch Workaround**: 1. **Disable** the plugin immediately if update is impossible. 2. **Remove** the plugin entirely. 3. Implement WAF rules to block suspicious `unserialize` payloads in POST requests. 4.…