CVE-2020-9480 — AI Deep Analysis Summary

🚨 **Essence**: Apache Spark Standalone Master has an **Access Control Error**. 📉 **Consequences**: Attackers can bypass authentication and execute **Shell Commands** on the host machine.…

🛡️ **Root Cause**: **Access Control Error** (CWE not specified). 🐛 **Flaw**: The authentication mechanism for the Standalone Resource Manager is flawed.…

📦 **Vendor**: Apache Software Foundation. 📦 **Product**: Apache Spark. 📅 **Affected Versions**: **2.4.5 and earlier**. ⚠️ **Scope**: Only affects clusters using the **Standalone** resource manager.…

👮 **Privileges**: The attacker gains the privileges of the Spark Master process. 💻 **Action**: Can execute arbitrary **Shell Commands** on the host.…

🔑 **Auth Required?**: Yes, `spark.authenticate` must be enabled. 🎯 **Config**: Must be a **Standalone** mode cluster. 📉 **Threshold**: **Low/Medium**. Although auth is on, the bypass is trivial via crafted RPC.…

💻 **Public Exp?**: **YES**. 📂 **PoC Available**: GitHub repos exist (e.g., `XiaoShaYu617/CVE-2020-9480`). 🤖 **Automated**: Nuclei templates (`projectdiscovery/nuclei-templates`) are available for scanning.…

🔍 **Self-Check**: Scan for Apache Spark Master ports (default 7077). 🧪 **Test**: Attempt to start an application via RPC without the shared secret key. 📡 **Tools**: Use Nuclei with the CVE-2020-9480 template.…

🛠️ **Fixed?**: **YES**. ✅ **Patch**: Upgrade to **Apache Spark 2.4.6** or later. 📜 **Official**: Confirmed by Apache Spark Security page. 🔒 **Action**: Immediate upgrade is the primary mitigation.

🚧 **No Patch?**: 1. **Isolate**: Block network access to the Spark Master port (7077) from untrusted networks. 2. **Disable**: If not needed, disable the Standalone Master. 3.…

🔥 **Urgency**: **CRITICAL**. 🚨 **Priority**: **P0**. ⚡ **Reason**: RCE vulnerability with public PoC. Affects common standalone deployments. Immediate patching or network isolation is required to prevent compromise.…