CVE-2023-49105 — AI Deep Analysis Summary

🚨 **Essence**: ownCloud pre-signed URLs bypass WebDAV API auth. 📉 **Consequences**: Attackers gain full control (Read/Write/Delete) over files without login. 💥 **Impact**: High (CVSS 9.8).…

🛡️ **Root Cause**: Logic flaw in signature validation. 🔍 **Flaw**: The system accepts pre-signed URLs even if the file owner has **no signing-key configured**.…

📦 **Product**: ownCloud Core. 📅 **Affected Versions**: **10.6.0** to **10.13.0**. 🚫 **Fixed In**: Version **10.13.1** and later. ⚠️ **Note**: Earliest affected version is 10.6.0.

🕵️ **Privileges**: Unauthenticated access (if victim username known). 📂 **Data Access**: Can **access, modify, or delete** ANY file. 🔑 **Condition**: Victim must have **no signing-key** configured.…

⚖️ **Threshold**: Medium-High. 🔐 **Auth Required**: None for the exploit itself. 🎯 **Prerequisites**: 1. Attacker must know the **victim's username**. 2. Victim must have **no signing-key** configured.…

💻 **Exploit Available**: YES. 📂 **PoC**: [ambionics/owncloud-exploits](https://github.com/ambionics/owncloud-exploits) on GitHub.…

🔍 **Self-Check**: 1. Verify ownCloud version (10.6.0-10.13.0). 2. Check if users have **signing-keys** configured. 3. Run Nuclei scan with CVE-2023-49105 template.…

🔧 **Official Fix**: YES. 📥 **Action**: Upgrade ownCloud Core to **version 10.13.1** or higher.…

🛡️ **Workaround**: If patching is delayed, ensure **ALL** file owners have a **signing-key configured**. 🔒 **Mitigation**: This prevents the bypass because the vulnerability relies on the *absence* of a signing key.…

🔥 **Urgency**: **CRITICAL**. 📉 **CVSS**: 9.8 (High). 🚀 **Priority**: Patch immediately. 📉 **Risk**: Easy exploitation (AC:L, PR:N) leads to total data loss. ⏳ **Time**: Do not delay. Upgrade to 10.13.1+ ASAP.