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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: A security flaw in Jenkins Pipeline Declarative Plugin.…
🛡️ **Root Cause**: Flaw in `Converter.groovy` file within the plugin. 🧠 **CWE**: Not explicitly listed in data, but involves **Metaprogramming** and **ACL Bypass** mechanisms.
💀 **Attacker Action**: Can inject malicious payloads into HTTP endpoints. 🔓 **Privilege**: Requires only **Overall/Read** permission to exploit. 🎯 **Goal**: Likely Remote Code Execution (RCE) via metaprogramming.
Q5Is exploitation threshold high? (Auth/Config)
⚖️ **Threshold**: **Low**. 📝 **Auth**: Only needs basic **Overall/Read** access. 🌐 **Config**: Exploits standard HTTP endpoints. Easy to trigger if access exists.
Q6Is there a public Exp? (PoC/Wild Exploitation)
🔓 **Public Exp?**: **Yes**. 📜 **Evidence**: Rapid7 module (`jenkins_metaprogramming`) and PacketStorm exploit available. 🌍 **Status**: Wild exploitation is possible.
Q7How to self-check? (Features/Scanning)
🔍 **Self-Check**: Scan for Jenkins Pipeline Declarative Plugin. 📊 **Version**: Check if version is **≤ 1.3.3**. 🛠️ **Tool**: Use vulnerability scanners detecting Groovy metaprogramming flaws.
Q8Is it fixed officially? (Patch/Mitigation)
✅ **Fixed?**: **Yes**. 📅 **Advisory**: Jenkins Security Advisory 2019-01-08. 📦 **Patch**: Update to a fixed version (implied by advisory). Red Hat also issued errata (RHBA-2019:0327/0326).