CVE-2018-19518 — AI Deep Analysis Summary

🚨 **Essence**: A Parameter Injection flaw in `imap_open()`. 📉 **Consequences**: Remote attackers can execute arbitrary OS commands via the IMAP server name.…

🛡️ **Root Cause**: CWE-78 (OS Command Injection). ❌ **Flaw**: Lack of validation on the **Server URI**. 🧠 **Mechanism**: The `imap_rimap` and `tcp_aopen` functions pass untrusted input directly to the OS shell.

📦 **Affected**: University of Washington IMAP Toolkit **2007f**. 🐘 **Context**: Specifically impacts PHP's `imap_open()` and similar implementations on **UNIX** platforms.…

👑 **Privileges**: **Remote Code Execution (RCE)**. 📂 **Data**: Full access to the underlying OS. 🎯 **Vector**: Attackers inject commands (e.g., `-oProxyCommand`) into the IMAP server name field.

⚡ **Threshold**: **LOW**. 🚪 **Auth**: No authentication required for the injection point. ⚙️ **Config**: Requires the target to use `uw-imap` where `rsh` is aliased to `ssh`.…

🔓 **Public Exp**: **YES**. 📂 **Resources**: Multiple PoCs available on GitHub (e.g., `houqe/EXP_CVE-2018-19518`, `vulhub`). 🤖 **Automation**: Detected by Nuclei templates. 🚀 **Ease**: Simple Python script execution.

🔍 **Self-Check**: Scan for `uw-imap` versions. 📡 **Indicator**: Look for PHP apps using `imap_open()` with untrusted input.…

🩹 **Fix**: **YES**. 📜 **Advisories**: Debian LTS update (DLA 2866-1), Gentoo GLSA-202003-57. 🔄 **Action**: Update `uw-imap` to the patched version. 📅 **Date**: Advisories published Nov/Dec 2018.

🚧 **Workaround**: 🚫 **Disable** `imap_open()` if not needed. 🛡️ **Input Sanitization**: Strictly validate/whitelist IMAP server names in web apps.…

🔥 **Priority**: **HIGH**. 📉 **CVSS**: Critical due to RCE potential. 🚨 **Urgency**: Patch immediately. ⚠️ **Risk**: Active exploitation is trivial with public PoCs.…