{"id":200,"date":"2024-12-05T00:19:00","date_gmt":"2024-12-04T16:19:00","guid":{"rendered":"http:\/\/47.121.202.229\/?p=200"},"modified":"2024-12-12T01:40:54","modified_gmt":"2024-12-11T17:40:54","slug":"sql%e6%b3%a8%e5%85%a5-sqli-labs%e9%9d%b6%e5%9c%ba","status":"publish","type":"post","link":"http:\/\/47.121.202.229\/?p=200","title":{"rendered":"SQL\u6ce8\u5165—-sqli-labs\u9776\u573a"},"content":{"rendered":"\n

0x00<\/h2>\n\n\n\n

sql\u6ce8\u5165\u7684\u6ce8\u5165\u70b9\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662fget\u578b\u6ce8\u5165\uff0c\u4e00\u822c\u50cfurl\u4e0a\u7684\u53c2\u6570\uff08?id=1\uff09\uff1b\u4e00\u79cd\u662fpost\u578b\u6ce8\u5165\uff0c\u5728\u8868\u5355\u7684\u63d0\u4ea4\u5904<\/p>\n\n\n\n

\u4e00\u822c\u7684\u6ce8\u5165\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\n
    \n
  • \u627e\u5230\u6ce8\u5165\u70b9\uff08\u5373\u80fd\u53d1\u6570\u636e\u5230\u670d\u52a1\u5668\uff0c\u670d\u52a1\u5668\u5e26\u7740\u53d1\u9001\u7684\u6570\u636e<\/strong>\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u5730\u65b9\uff09<\/li>\n\n\n\n
  • \u5224\u65ad\u6ce8\u5165\u7c7b\u578b\uff08\u6570\u5b57\u578b\u6ce8\u5165 \u8fd8\u662f \u5b57\u7b26\u578b\u6ce8\u5165\uff09<\/li>\n\n\n\n
  • \u5982\u679c\u662f\u5b57\u7b26\u578b\u6ce8\u5165\uff0c\u5224\u65ad\u95ed\u5408\u7b26\u53f7<\/li>\n\n\n\n
  • \u5224\u65ad\u539f\u6765\u8bed\u53e5\u5728\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u51fa\u6765\u7684\u5217\u6570\uff08\u7528\u4e8eunion\u6ce8\u5165\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n

    \u4e00\u822c\u7684\u6ce8\u5165\u65b9\u6cd5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u7c7b\uff1a<\/p>\n\n\n\n

      \n
    • union\u8054\u5408\u6ce8\u5165<\/li>\n\n\n\n
    • \u62a5\u9519\u6ce8\u5165<\/li>\n\n\n\n
    • bool\u76f2\u6ce8<\/li>\n\n\n\n
    • \u65f6\u95f4\u76f2\u6ce8<\/li>\n\n\n\n
    • \u4e8c\u6b21\u6ce8\u5165<\/li>\n\n\n\n
    • \u5806\u53e0\u6ce8\u5165<\/li>\n\n\n\n
    • \u5e26\u5916\u6ce8\u5165<\/li>\n<\/ul>\n\n\n\n

      0x01 \u5224\u65ad\u6ce8\u5165\u7c7b\u578b<\/h2>\n\n\n\n

      and 1=2<\/h3>\n\n\n\n

      \u5b57\u7b26\u578b\u6ce8\u5165\u4f1a\u628a\u4f20\u5165\u7684\u53c2\u6570\u653e\u5728\u4e00\u4e2a\u95ed\u5408\u7b26\u4e2d\uff0c\u5047\u8bbe\u670d\u52a1\u5668\u5bf9\u63a5\u6536\u53c2\u6570\u7684\u539f\u4ee3\u7801\u53ef\u80fd\u662f\u8fd9\u6837\u5199\u7684\uff1a<\/p>\n\n\n\n

      select * from users where id='\u53c2\u6570'<\/code><\/pre>\n\n\n\n
      \u800c\u6570\u5b57\u578b\u6ce8\u5165\u6ca1\u6709\u95ed\u5408\u7b26\u3002\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528 and<\/strong> \u8bed\u53e5\u6765\u5224\u65ad\u662f\u6570\u5b57\u578b\u8fd8\u662f\u5b57\u7b26\u578b\u6ce8\u5165\u3002<\/p>\n\n\n\n
      ?id=1 and 1=2<\/code><\/pre>\n\n\n\n
      and\u8bed\u53e5\u53ea\u6709\u4e24\u8fb9\u540c\u65f6\u4e3a\u771f\u65f6\uff0c\u8bed\u53e5\u624d\u4e3a\u771f\uff0c\u624d\u80fd\u6267\u884c\u3002\u56e0\u6b64\u5728\u6570\u5b57\u578b\u6ce8\u5165\u4e2d\uff0c\u4ee5\u4e0a\u7684\u53c2\u6570\u4f20\u5230\u6e90\u7801\u4e2d\uff0c\u663e\u793a\u4e3a:select * from users where id=1 and 1=2  <\/strong> \u540e\u9762\u4e3a\u5047\uff0c\u65e0\u6cd5\u6267\u884c\uff0c\u9875\u9762\u56de\u663e\u9519\u8bef\u6216\u4e0eid=1\u65f6\u5019\u56de\u663e\u4e0d\u540c\u3002<\/p>\n\n\n\n
      \u5f53\u6ce8\u5165\u4e3a\u5b57\u7b26\u578b\u6ce8\u5165\u65f6\uff0c\u6e90\u7801\u4e2d\u6267\u884c\u7684\u8bed\u53e5\u4e3a select * from users where id=’1 and 1=2′  \u8fd9\u6837\u53ea\u4f1a\u89e3\u6790\u5b57\u7b26\u4e32\u4e2d\u7b2c\u4e00\u4e2a\u6570\u5b57\uff0c\u56de\u663e\u7684\u9875\u9762\u4e0eid=1\u4e00\u6837\u3002<\/p>\n\n\n\n
      2 & 2-1<\/h3>\n\n\n\n
      \u539f\u7406\u7c7b\u4f3c\uff0c\u5982\u679c\u662f\u6570\u5b57\u578b\u6ce8\u5165\uff0c\u90a3\u4e48\u670d\u52a1\u5668\u4e2d\u6e90\u7801\u662f select * from users where id=2-1  \u6700\u7ec8\u4f1a\u56de\u663eid=1\u7684\u7ed3\u679c\uff1b\u5b57\u7b26\u578b\u6ce8\u5165 select * from users where id=\u20182-1\u2019 \u5219\u663e\u793a id=2\u7684\u7ed3\u679c<\/p>\n\n\n\n
      0x02  \u5224\u65ad\u95ed\u5408\u65b9\u5f0f<\/h2>\n\n\n\n
      \u4e22\u5355\u5f15\u53f7\u3001\u53cc\u5f15\u53f7<\/h3>\n\n\n\n
      \u5982\u679c\u9875\u9762\u6709\u62a5\u9519\u56de\u663e \u53ef\u4ee5\u5c1d\u8bd5\u4e22\u5355\u3001\u53cc\u5f15\u53f7\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u5982\u56fe\u6240\u793a\uff0c\u53ef\u4ee5\u77e5\u9053\u95ed\u5408\u65b9\u5f0f\u662f\u5355\u5f15\u53f7\u5305\u88f9\u20181\u2019<\/p>\n\n\n\n
      \u76f2\u6ce8\u731c\u6d4b<\/h3>\n\n\n\n
      \u5982\u679c\u6ca1\u6709\u62a5\u9519\u56de\u663e\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528bool\u76f2\u6ce8\u3002\u5728\u53c2\u6570\u7684\u53f3\u8fb9\u731c\u53f3\u7aef\u95ed\u5408\u7b26<\/strong> \u5982   \u2019  \u201d   )    \u7b49<\/p>\n\n\n\n
      http:\/\/127.0.0.1:10001\/Less-1\/?id=1' --+<\/code><\/pre>\n\n\n\n
      \u56de\u663e\u5185\u5bb9\u4e0d\u662f\u62a5\u9519\u5185\u5bb9\uff0c\u4e0eid=1\u5185\u5bb9\u4e00\u81f4\u65f6\uff0c\u5219\u95ed\u5408\u65b9\u5f0f\u4e3a\u6240\u731c\u6d4b\u7684\u95ed\u5408\u7b26<\/p>\n\n\n\n
      0x03  \u6b63\u5e38\u63d0\u4ea4\u540e\u67e5\u8be2\u51e0\u5217\u6570\u636e<\/h2>\n\n\n\n
      order by<\/h3>\n\n\n\n
      order by\u662f\u4e00\u4e2a\u6392\u5e8f\u7684\u51fd\u6570\uff0c\u5bf9\u67e5\u8be2\u51fa\u7684\u5185\u5bb9\u6309\u7167\u9009\u5b9a\u7684\u5217\u8fdb\u884c\u6392\u5e8f<\/strong>\uff08\u80fd\u9009\u8be5\u8868\u4e2d\u7684\u6240\u6709\u5217\uff0c\u5373\u4fbf\u4e0d\u662f\u67e5\u8be2\u7684\u5217\uff09\uff0c\u9ed8\u8ba4\u662f\u4ece\u5c0f\u5230\u5927\u3002\u56e0\u6b64\u6700\u5927\u7684\u80fd\u4e0d\u62a5\u9519\u56de\u663e\u7684\u6570\u5b57 \u5c31\u662f\u6e90\u7801\u4e2d\u67e5\u8be2\u8bed\u53e5\u5f97\u5230\u7684\u6570\u636e\u7684\u5217\u6570\u3002<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u63d2\u70b9\u9898\u5916\u8bdd\uff0corder by\u548c group_concat() \u8fde\u7528\u7684\u65f6\u5019\uff0corder by \u8981\u653egroup_concat\u7684\u62ec\u53f7\u4e2d\uff0c\u5e76\u4e14\u5728\u67e5\u8be2\u7684\u5217\u7684\u540e\u9762\uff0c\u4e0d\u7136order by\u7684\u6392\u5e8f\u529f\u80fd\u4f1a\u5931\u6548\u3002group_concat\u662f\u4e00\u4e2a\u5c06\u67e5\u8be2\u5185\u5bb9\u62fc\u63a5\u6210\u4e00\u884c<\/strong>\u7684\u51fd\u6570<\/p>\n\n\n\n
      group by<\/h3>\n\n\n\n
      group by \u662f\u4e00\u4e2a\u7528\u4e8e\u5206\u7ec4\u7684\u51fd\u6570\uff0c\u4e00\u822c\u4e5f\u80fd\u8fdb\u884c\u5217\u6570\u7684\u5224\u65ad\uff0c\u5728\u4e00\u4e9b waf \u5bf9 order by \u62e6\u622a\u65f6\u6709\u5947\u6548<\/p>\n\n\n\n
      0x04  \u5224\u65ad\u56de\u663e\u4f4d\u7f6e<\/h2>\n\n\n\n
      \u5e76\u4e0d\u662f\u8bf4\u6e90\u7801\u4e2d\u7684\u67e5\u8be2\u8bed\u53e5\u67e5\u8be2\u5230\u51e0\u5217\u6570\u636e\uff0c\u5c31\u56de\u663e\u51e0\u5217\u3002\u56e0\u6b64\u6211\u4eec\u8981\u5224\u65ad\u56de\u663e\u4f4d\uff0c\u5373\u56de\u663e\u7684\u6570\u636e\u662f\u6e90\u7801\u4e2d\u67e5\u8be2\u7684\u6570\u636e\u7684\u7b2c\u51e0\u5217\u3002<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u7531\u56fe\u53ef\u77e5\uff0c\u67e5\u8be2\u5230\u7684\u7b2c\u4e8c\u5217\u548c\u7b2c\u4e09\u5217\u6570\u636e\u56de\u663e\uff0c\u90a3\u4e48\u7b2c\u4e8c\u5217\u548c\u7b2c\u4e09\u5217\u7684\u4f4d\u7f6e\u5c31\u53ef\u4ee5\u4f5c\u4e3a\u6211\u4eec\u7684payload\u70b9<\/p>\n\n\n\n
      \u6709\u4e00\u70b9\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6709\u7684\u9875\u9762\u53ea\u80fd\u56de\u663e\u4e00\u884c\u6570\u636e\uff0c\u6bd4\u5982\u8fd9\u4e2a\u9776\u573a\uff0c\u56e0\u6b64\u53ef\u4ee5\u628aunion\u524d\u9762\u67e5\u8be2\u7684\u53c2\u6570\u6539\u6210\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u6570\uff0c\u8fd9\u6837\u67e5\u8be2\u4e0d\u5230 union \u524d\u7684\u8bed\u53e5\uff0c\u5c31\u80fd\u663e\u793a\u51faunion\u540e\u6211\u4eec\u771f\u5b9e\u9700\u8981\u7684\u8bed\u53e5\u4e86\u3002<\/p>\n\n\n\n
      0x05 less-1 \u4f7f\u7528union\u6ce8\u5165\u7206\u51fa\u6570\u636e\u5e93\u6240\u6709\u8d26\u53f7\u5bc6\u7801<\/h2>\n\n\n\n
      \u6211\u4eec\u77e5\u9053\u4e86\u662f\u5b57\u7b26\u578b\u6ce8\u5165\uff0c\u5f53\u524d\u7684\u8868\u6709\u4e09\u5217\uff0c\u56de\u663e\u4f4d\u4e3a2\u30013\u5217<\/p>\n\n\n\n
      \u9996\u5148\u8981\u5f97\u5230\u6240\u6709\u5e93\u540d\uff1a<\/p>\n\n\n\n
      Mysql\u4e2d\u6709\u4e00\u4e2a\u81ea\u5e26\u7684\u6570\u636e\u5e93 infomation_schema<\/strong>  \u8bb0\u5f55\u5f53\u524dmysql\u6570\u636e\u5e93\u4e2d\u6240\u6709 \u5e93\u3001\u8868\u3001\u5217 \u7684\u4fe1\u606f\uff08\u4ee5\u5f53\u524d\u7528\u6237\u8fde\u63a5\u7684mysql\u80fd\u8bbf\u95ee\u7684\u6570\u636e\u5e93\uff09\u3002\u5176\u4e2d\u6709\u4e2a\u8868\u540d schemata<\/strong> ,\u8bb0\u5f55\u6240\u6709\u5e93\u7684\u4fe1\u606f\uff0c\u8868\u4e2d\u7684 schema_name<\/strong> \u8bb0\u5f55\u7740\u6240\u6709\u7684\u5e93\u540d\u3002<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u5176\u6b21\u5c31\u662f\u8981\u5f97\u5230security\u4e2d\u6240\u6709\u8868\u540d\uff1a<\/p>\n\n\n\n
      information_schema \u7684\u8868 tables <\/strong>\u4e2d\u7684\u5217 table_name<\/strong> \u8bb0\u5f55\u4e86Mysql\u6570\u636e\u5e93\u4e2d\u6240\u6709\u5e93\u7684\u8868\u540d\u3002\u4f46\u662f\u8868\u540d\u5b9e\u5728\u592a\u591a\uff0c\u8bb0\u5f55\u8868\u540d\u6240\u5728\u7684\u5e93\u7684\u90a3\u4e00\u5217\u7684\u5217\u540d<\/strong> \u53eb\u505atable_schema,\u56e0\u6b64\u53ef\u4ee5\u52a0\u4e00\u4e2awhere\u9650\u5b9a\u3002\u6709\u7684\u65f6\u5019\u76f4\u63a5\u5199\u5e93\u540d\u4f1a\u88abwaf\u62e6\u622a\uff0c\u56e0\u6b64\u53ef\u4ee5\u5199table_schema=database()<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u4e0b\u4e00\u6b65\u5c31\u662f\u62ff\u5230 users \u8fd9\u4e2a\u8868\u4e2d\u6240\u6709\u5217\u540d\uff0c\u6839\u636e\u5217\u540d\u63a8\u65ad\u51fa\u54ea\u4e9b\u5217\u662f\u8d26\u53f7\u5bc6\u7801\u3002infomation_schema <\/strong>  \u8fd9\u4e2a\u5e93\u4e2d\u7684\u8868 columns <\/strong>\u5b58\u50a8\u7740\u6240\u6709\u7684\u5217\u540d\u4fe1\u606f\uff0c\u8fd9\u4e2a\u8868\u4e2d\u7684 column_name<\/strong> \u5217\u5b58\u50a8\u7740\u5217\u540d\uff0c\u518d\u52a0\u4e0a\u6240\u5728\u8868\u3001\u5e93\u7684\u9650\u5b9a\uff1a<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u6613\u5f97username \u548c password\u5217\u4e2d\u5b58\u50a8\u7740\u7528\u6237\u540d\u548c\u5bc6\u7801\uff1a<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u6700\u7ec8\u62ff\u5230\u6240\u6709\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801<\/p>\n\n\n\n
      0x06  \u6570\u5b57\u578bunion\u6ce8\u5165<\/h2>\n\n\n\n
      \u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u6dfb\u52a0\u95ed\u5408\u7b26\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u5224\u65ad\u95ed\u5408\u7b26\uff1b\u6709\u7684\u65f6\u5019\u7ed3\u5c3e\u751a\u81f3\u4e0d\u7528\u52a0–+,\u89c6\u5177\u4f53\u60c5\u51b5\u800c\u5b9a<\/p>\n\n\n\n
      0x07 extractvalue() \u62a5\u9519\u6ce8\u5165—-less-5<\/h2>\n\n\n\n
      \u6709\u7684\u65f6\u5019\u67e5\u8be2\u8bed\u53e5\u6b63\u5e38\u6267\u884c\uff0c\u4f46\u662f\u9875\u9762\u5e76\u4e0d\u56de\u663e\uff1b\u4f46\u662f\u8f93\u5165\u9519\u8bef\u7684\u67e5\u8be2\u8bed\u53e5\u9875\u9762\u4f1a\u8fd4\u56de\u62a5\u9519\u4fe1\u606f\u3002\u90a3\u6211\u4eec\u5c31\u53ef\u4ee5\u5c1d\u8bd5\u7528\u62a5\u9519\u6ce8\u5165\u3002\u62a5\u9519\u6ce8\u5165\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f \u6784\u9020<\/strong>\u4e00\u4e2a\u8ba9\u9519\u8bef\u4fe1\u606f\u4e2d\u5939\u6742\u7740\u53ef\u4ee5\u663e\u793a\u6570\u636e\u5e93\u5185\u5bb9\u7684<\/strong>\u67e5\u8be2\u8bed\u53e5\u3002<\/p>\n\n\n\n
      \u56e0\u6b64\uff0c\u62a5\u9519\u6ce8\u5165\u4f7f\u7528\u7684\u6761\u4ef6\u5c31\u662f \u7f51\u7ad9\u7684\u524d\u7aef\u80fd\u591f\u52a8\u6001\u5730\u663e\u793a\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u7684\u62a5\u9519\u4fe1\u606f<\/strong>\uff0c\u5199\u6b7b\u7684\u6216\u8005\u670d\u52a1\u5668\u4e2d\u81ea\u5b9a\u4e49\u7684\u62a5\u9519\u4fe1\u606f\u4e0d\u7b97\uff08\u6bd4\u5982\u9519\u8bef404\u4e4b\u7c7b\u7684\uff09\u3002<\/p>\n\n\n\n
      extractvalue(doc,path)\u51fd\u6570\u662f\u4e00\u4e2a\u80fd\u8fd4\u56de\u67e5\u8be2\u7684xml\u6587\u6863\u4e2d\u7b26\u5408\u8def\u5f84\u5185\u5bb9\u7684\u51fd\u6570\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u5199\u7684\u662fxml\u6587\u6863\u7684\u5bf9\u8c61\uff0c\u5176\u5b9e\u5c31\u662f\u6570\u636e\u5e93\u4e2d\u7684\u5217\u540d\u3002\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5199\u7684\u662fxml\u6587\u6863\u4e2d\u8981\u67e5\u8be2\u7684\u8def\u5f84\uff0c\u5f53\u8def\u5f84\u4e0d\u6b63\u786e\u65f6\uff0c\u4f1a\u8fd4\u56de\u5173\u4e8e\u8def\u5f84\u7684\u9519\u8bef\u4fe1\u606f\u3002\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u52a0\u5165\u6211\u4eec\u60f3\u67e5\u8be2\u7684\u6570\u636e\uff0c\u901a\u8fc7\u62a5\u9519\u5c06\u5176\u56de\u663e\u51fa\u6765<\/p>\n\n\n\n
      xml\u8def\u5f84\u7b2c\u4e00\u4e2a\u5fc5\u987b\u662f \/   ,\u56e0\u6b64\u53ef\u4ee5\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5f00\u5934\u5199\u4e00\u4e2a~\u7b26\u53f7\u8ba9\u5176\u62a5\u9519\u3002~\u7684ascii\u7801\u503c\u662f0x7e<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u8fd9\u91ccextractvalue\u7b2c\u4e00\u4e2a\u53c2\u65701\u6307\u7684\u662f\u7b2c\u4e00\u5217\uff0cconcat()\u51fd\u6570\u7684\u4f5c\u7528\u662f\u628a\u7b2c\u4e00\u4e2a\u53c2\u6570\u548c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u62fc\u63a5\u8d77\u6765\uff0c\u4ec5\u6b64\u800c\u5df2<\/p>\n\n\n\n
      \u63a5\u4e0b\u6765\u6211\u4eec\u5c1d\u8bd5\u7528extractvalue()\u51fd\u6570\u7206\u51fa\u6240\u6709\u6570\u636e\u5e93\u540d\u3001\u8868\u540d\u3001\u5217\u540d\uff0c\u62ff\u5230\u6240\u6709\u7528\u6237\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\uff1a<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u4f46\u662f\u6211\u4eec\u53d1\u73b0\uff0cextractvalue()\u51fd\u6570\u7684\u62a5\u9519\u4fe1\u606f\u53ea\u80fd\u56de\u663e32\u4e2a\u5b57\u7b26\uff0c\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u7528substring\u51fd\u6570\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u63a5\u4e0b\u6765\u67e5\u8be2security\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u8868\u540d<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u63a5\u4e0b\u6765\u67e5\u8be2users\u8fd9\u5f20\u8868\u4e2d\u6240\u6709\u5217\u540d\uff1a<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      \u4e4b\u540e\u7206\u51fa\u6765\u6240\u6709\u7528\u6237\u540d\u548c\u5bf9\u5e94\u7684\u5bc6\u7801<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      0x08  updatexml\u62a5\u9519\u6ce8\u5165—-less-5<\/h2>\n\n\n\n
      updatexml(doc,path,new_value)\u51fd\u6570\u662fsql\u8bed\u53e5\u4e2d\u7528\u6765\u66f4\u65b0xml\u6587\u6863\u5185\u5bb9\u7684\u8bed\u53e5\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8981xml\u6587\u6863\u5bf9\u8c61\uff0c\u4e5f\u5c31\u662f\u6570\u636e\u5e93\u4e2d\u7684\u5217\uff1b\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8981\u66f4\u6539\u7684\u8def\u5f84\uff1b\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u628a\u7b26\u5408\u8def\u5f84\u4e0b\u7684\u5185\u5bb9\u4fee\u6539\u6210\u7684\u65b0\u7684\u503c<\/strong>\u3002\u548cextractvalue\u51fd\u6570\u4e00\u6837\uff0c\u4f9d\u65e7\u662f\u5f53\u8def\u5f84\u9519\u8bef\u65f6\uff0c\u8fd4\u56de\u9519\u8bef\u8def\u5f84\u7684\u4fe1\u606f\uff0c\u6240\u4ee5\u4f9d\u65e7\u662f\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u505a\u6587\u7ae0\u3002<\/p>\n\n\n\n
      \u5177\u4f53\u7684\u8fc7\u7a0b\u548c\u524d\u9762\u7684extractvalue\u62a5\u9519\u6ce8\u5165\u4e00\u6837\uff0c\u4e5f\u662f\u53ea\u80fd\u56de\u663e32\u4e2a\u5b57\u7b26\uff0c\u8fd9\u91cc\u4e0d\u8fc7\u591a\u6f14\u793a\uff0c\u76f4\u63a5\u653e\u6700\u540e\u7206\u51fa\u6765\u7528\u6237\u540d\u548c\u5bc6\u7801\u7684\u622a\u56fe<\/p>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
      0x09  floor\u62a5\u9519\u6ce8\u5165—-less-5<\/h2>\n\n\n\n
      floor\u62a5\u9519\u662f\u4e00\u4e2a\u5229\u7528count\u51fd\u6570\u8ba1\u6570\u65f6\u7684\u903b\u8f91\u6f0f\u6d1e\u6765\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\u7684\u62a5\u9519\u6ce8\u5165\u65b9\u5f0f\uff0c\u5176\u4e2d\u8981\u7528\u5230\u5f88\u591a\u51fd\u6570\uff0c\u4e0b\u9762\u4e00\u4e00\u4ecb\u7ecd\uff1a<\/p>\n\n\n\n
        \n
      • rand()  \u968f\u673a\u8fd4\u56de0-1\u4e4b\u95f4\u7684\u5c0f\u6570<\/li>\n\n\n\n
      • floor()  \u5c06\u6570\u5b57\u5411\u4e0b\u53d6\u6574   (\u5411\u4e0a\u53d6\u6574ceiling())<\/li>\n\n\n\n
      • concat_ws()  \u5c06\u62ec\u53f7\u5185\u7684\u6570\u636e\u7528\u7b2c\u4e00\u4e2a\u53c2\u6570\u8fde\u63a5\u8d77\u6765  <\/li>\n\n\n\n
      • group by  \u5206\u7ec4\u51fd\u6570\uff0c\u5e38\u4e0ecount()\u51fd\u6570\u8fde\u7528<\/li>\n\n\n\n
      • as  \u522b\u540d<\/li>\n\n\n\n
      • count()  \u7528\u4e8e\u7edf\u8ba1\u6570\u91cf<\/li>\n\n\n\n
      • limit  \u7528\u4e8e\u663e\u793a\u6307\u5b9a\u884c\u6570<\/li>\n<\/ul>\n\n\n\n
        rand()\u51fd\u6570\u6709\u4e00\u4e2a\u7528\u6cd5 \u5c31\u662f\u53ef\u4ee5\u5224\u65ad\u4e00\u4e2a\u8868\u4e2d\u5b58\u5728\u51e0\u884c\u6570\u636e\uff0c\u8fd4\u56de\u51e0\u4e2a\u6570\u5b57\u8bf4\u660e\u8fd9\u4e2a\u8868\u4e2d\u5c31\u6709\u51e0\u884c\u6570\u636e<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u5047\u8bbe\u6211\u8981\u67e5\u8be2\u7684\u4fe1\u606f\u662f\u5f53\u524d\u6570\u636e\u5e93\u540d\uff0c\u90a3\u4e48\u6211\u8981\u5148\u7528concat_ws(‘-‘,database(),floor(rand()*2))<\/strong>\u628a\u67e5\u8be2\u7684\u6570\u636e\u548c\u4e00\u4e2a0\u62161\u7684\u6570\u62fc\u63a5\u8d77\u6765\u4f5c\u4e3a\u4e00\u4e2a\u522b\u540da\uff1b\u7136\u540e\u9009\u7528\u4e00\u4e2a\u6709\u591a\u884c\u6570\u636e\u7684\u8868\uff0c\u8ba9rand()\u51fd\u6570\u663e\u793a\u591a\u6b21\uff0c\u5373\u8fdb\u884c\u591a\u6b21\u62fc\u63a5\uff0c\u8fd9\u91cc\u6211\u7528information_schema.tables\u8fd9\u5f20\u8868\uff1b\u7136\u540e\u7528count(*) \u548cgroup by a\u67e5\u8be2a\u6bcf\u79cd\u603b\u5171\u6709\u51e0\u4e2a\uff08\u56e0\u4e3a\u62fc\u63a5\u7684\u6570\u5b57\u53ea\u67091\u62162\uff0c\u6240\u4ee5\u53ea\u6709\u4e24\u79cd\uff09\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u4f1a\u4ea7\u751f\u62a5\u9519\u3002<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u4ea7\u751f\u62a5\u9519\u7684\u539f\u56e0\u662f\u56e0\u4e3acount()\u51fd\u6570\u7684\u8ba1\u7b97\u673a\u5236\u903b\u8f91\u4e0a\u5b58\u5728\u6f0f\u6d1e\uff0c\u8fd9\u91cc\u53ef\u80fd\u4f1a\u56de\u663esecurity~1,\u4e5f\u6709\u53ef\u80fd\u56de\u663esecurity~0,\u8fd8\u6709\u53ef\u80fd\u6b63\u5e38\u56de\u663e\u3002\u53ef\u4ee5\u5728rand()\u51fd\u6570\u4e2d\u95f4\u52a0\u5165\u53c2\u65700\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u62a5\u9519\u56de\u663e\uff0c\u56e0\u4e3a\u8fd9\u65f6\u8fd4\u56de\u7684\u5c0f\u6570\u5c31\u662f\u56fa\u5b9a\u7684\uff0c\u8fd8\u6709\u5176\u4ed6\u53c2\u6570\u4e5f\u53ef\u4ee5\u8ba9\u62a5\u9519\u56fa\u5b9a\u3002<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u63a5\u4e0b\u6765\u5c31\u662f\u628a\u60f3\u8981\u67e5\u8be2\u7684\u5185\u5bb9\u653e\u5728\u539f\u6765database()\u7684\u4f4d\u7f6e\uff0c\u5373\u53ef\u8fdb\u884c\u62a5\u9519\u6ce8\u5165\u4e86\uff0c\u8fd9\u91cc\u5c31\u53ea\u4ece\u62ff\u5230\u6570\u636e\u5e93\u5217\u540d\u5f00\u59cb\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u63a5\u4e0b\u6765\u7206\u51fa\u6240\u6709\u7528\u6237\u540d\u548c\u5bc6\u7801\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u6211\u4eec\u53d1\u73b0\u6267\u884c\u4e0d\u51fa\u6765\u7ed3\u679c\uff0c\u53ef\u80fd\u662f\u56e0\u4e3afloor\u6ce8\u5165\u56de\u663e\u7684\u62a5\u9519\u4fe1\u606f\u8fc7\u957f\u5bfc\u81f4\u7684\u3002\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u5730\u62fc\u63a5\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u5e76\u7528 limit \u6765\u663e\u793a\u6570\u636e\u7684\u7b2c\u51e0\u884c\uff08\u4e00\u884c\u4e00\u884c\u5730\u663e\u793a\uff09<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        0x0A bool\u76f2\u6ce8—-less-8<\/h2>\n\n\n\n
        \u5047\u8bbe\u6267\u884c\u6b63\u5e38\u8bed\u53e5\u9875\u9762\u4e0d\u56de\u663e\uff0c\u4f7f\u7528\u62a5\u9519\u6ce8\u5165\uff0c\u9875\u9762\u4e5f\u4e0d\u56de\u663e\u9519\u8bef\u4fe1\u606f\uff0c\u8fd9\u4e2a\u65f6\u5019\u53ef\u4ee5\u89c2\u5bdf\u9875\u9762\u5bf9\u4e8e\u67e5\u8be2\u51fa\u5185\u5bb9\u4e0e\u67e5\u8be2\u4e0d\u51fa\u5185\u5bb9\uff0c\u662f\u5426\u5bf9\u5e94\u6709\u771f\u503c\u3001\u5047\u503c\u4e24\u79cd\u72b6\u6001<\/strong>\uff0c\u5982\u679c\u6709\uff0c\u90a3\u4e48\u9875\u9762\u5b58\u5728bool\u76f2\u6ce8<\/p>\n\n\n\n
        and\u8bed\u53e5\u662f\u8ddf\u5728where\u9650\u5b9a\u540e\u9762\u8fdb\u884c\u591a\u6761\u4ef6\u5224\u65ad\u7684\uff0c\u53ea\u6709 \u5bf9and\u524d\u540e\u4e24\u4e2a\u6761\u4ef6\u90fd\u4e3a\u771f<\/strong> \u7684\u6570\u636e\uff0c\u624d\u80fd\u67e5\u8be2\u51fa\u6765\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728and\u8bed\u53e5\u4e0a\u5199\u4e00\u4e9b\u6052\u4e3a\u771f\u6216\u6052\u4e3a\u5047\u7684\u8bed\u53e5\u3002bool\u76f2\u6ce8\u7684\u539f\u7406\u5c31\u662f\u5bf9\u67e5\u8be2\u8bed\u53e5\u6dfb\u52a0and\u6761\u4ef6\uff0c\u5f53\u6761\u4ef6\u4e3a\u771f\u65f6\uff0c\u9875\u9762\u8fd4\u56de\u201c\u771f\u201d\u5bf9\u5e94\u7684\u72b6\u6001\uff1b\u6761\u4ef6\u4e3a\u201c\u5047\u201d\u65f6\uff0c\u9875\u9762\u8fd4\u56de\u6761\u4ef6\u4e3a\u5047\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n
        \u6761\u4ef6\u4e3a\u771f\uff0c\u80fd\u591f\u67e5\u8be2\u5230\u6570\u636e\u65f6\uff0c\u8fd4\u56de\u771f\u9875\u9762\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u6761\u4ef6\u4e3a\u5047\uff0c\u8fd4\u56de\u5047\u9875\u9762\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7ascii()\u51fd\u6570\u5bf9\u8981\u67e5\u8be2\u7684\u5185\u5bb9\u8f6c\u7801\u6210ascii\u7801\uff0c\u5e76\u5c06\u8fd9\u4e2a\u8f6c\u6362\u540e\u7684ascii\u7801\u5728and\u8bed\u53e5\u4e2d\u8fdb\u884c\u76f2\u731c\u5224\u65ad\uff0c\u901a\u8fc7\u9875\u9762\u56de\u663e\u7684\u771f\u3001\u5047\u503c\u6765\u786e\u5b9a\u8981\u67e5\u8be2\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u6211\u4eec\u53d1\u73b0\u8fd9\u4e00\u6bb5\u6ce8\u5165\u8bed\u53e5\u9875\u9762\u8fd4\u56de\u4e3a\u771f\uff0c\u6240\u4ee5and\u540e\u7684\u8bed\u53e5\u6761\u4ef6\u4e3a\u771f\uff1b\u56e0\u6b64\u53ef\u4ee5\u518d\u8bd5\u4e00\u8bd5\uff0c\u628a\u503c\u6539\u4e3a120\uff0c\u6b64\u65f6\u53d1\u73b0\u9875\u9762\u4e3a\u5047<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u90a3\u4e48\u4e4b\u540e\u5c31\u5f88\u663e\u7136\u4e86\uff0c\u5728110\u5230120\u4e4b\u95f4\u53bb\u76f2\u731c\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u5f53\u524d\u6570\u636e\u5e93\u7684\u6570\u636e\u5e93\u540d\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u4e4b\u540e\u4ee5\u6b64\u7c7b\u63a8\uff0csubstr\u8fd4\u56de\u6570\u636e\u5e93\u540d\u7b2c\u4e8c\u4e2a\u5b57\u7b26\uff0c\u5f00\u59cb\u731c\u7b2c\u4e8c\u4e2a\u5b57\u7b26……<\/p>\n\n\n\n
        \u5f53\u7136\u4e5f\u53ef\u4ee5\u4e0d\u7528ascii()\u53bb\u8f6c\u6362\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u4e4b\u540e\u628a\u60f3\u8981\u67e5\u8be2\u7684\u6570\u636e\u653e\u5728substr\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f4d\u7f6e\u4e0a\uff0c\u5c31\u53ef\u4ee5\u4e86\uff0c\u8fd9\u91cc\u4ece\u67e5\u8be2\u5230\u4e86\u8868\u540d\u4e3ausers\u4e4b\u540e\u5f00\u59cb\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u6ce8\u610f\u8fd9\u91cc\u8981\u52a0limit 0,1\u4fdd\u8bc1\u8fd4\u56de\u4e00\u4e2a\u67e5\u8be2\u7ed3\u679c<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        0x0B  \u65f6\u95f4\u76f2\u6ce8—-less-9<\/h2>\n\n\n\n
        \u5982\u679c\u9875\u9762\u6ca1\u6709\u56de\u663e\u3001\u62a5\u9519\u3001\u771f\u5047\u503c\uff0c \u8fd9\u4e2a\u65f6\u5019\u5c31\u8981\u8003\u8651\u670d\u52a1\u5668\u5230\u5e95\u6709\u6ca1\u6709\u6267\u884c<\/strong>\u6211\u4eec\u7684\u6ce8\u5165\u4ee3\u7801\u3002\u600e\u4e48\u5224\u65ad\u670d\u52a1\u5668\u6267\u6ca1\u6267\u884c\u6211\u4eec\u7684\u6ce8\u5165\u4ee3\u7801\u5462\uff1f\u63a5\u4e0b\u6765\u5c31\u8981\u7528\u5230 sleep()<\/strong> \u51fd\u6570\u3002<\/p>\n\n\n\n
        sleep()\u51fd\u6570\u5c31\u662f\u4e00\u4e2a\u5ef6\u65f6\u7684\u51fd\u6570\uff0c\u4e2d\u95f4\u53c2\u6570\u5199\u51e0\u5c31\u5ef6\u65f6\u51e0\u79d2\u3002\u5bf9\u4e8eless9\uff0c\u4e0d\u7ba1\u6211\u8f93\u5165\u4ec0\u4e48\uff0c\u9875\u9762\u8fd4\u56de\u603b\u662f\u4e0d\u53d8\uff0c\u603b\u662f\u2018you are in……\u2019\uff0c\u6ca1\u6709\u56de\u663e\u3001\u62a5\u9519\u4fe1\u606f\u3001\u9875\u9762\u771f\u5047\u503c\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u8981\u5224\u65ad\u670d\u52a1\u5668\u6709\u6ca1\u6709\u6267\u884c\u6211\u7684\u4ee3\u7801\u3002\u6211\u731c\u6d4b\u4ed6\u662f\u4e00\u4e2a\u6570\u5b57\u578b\u6ce8\u5165\uff0c\u6dfb\u52a0sleep()\u51fd\u6570\u5ef6\u65f65\u79d2\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u53d1\u73b0\u6ca1\u6709\u7b49\u5230\u4e94\u79d2\uff0c\u9875\u9762\u5f88\u5feb\u5c31\u6709\u53cd\u5e94\uff0c\u8bf4\u660e\u8981\u4e48\u67e5\u8be2\u8bed\u53e5\u9519\u8bef\uff0c\u9875\u9762\u5e76\u4e0d\u662f\u6570\u5b57\u578b\u6ce8\u5165\uff1b\u8981\u4e48\u670d\u52a1\u5668\u6ca1\u6267\u884c\u6211\u7684\u4ee3\u7801\u3002\u63a5\u4e0b\u6765\u5c1d\u8bd5\u5b57\u7b26\u578b\u6ce8\u5165\uff0c\u731c\u6d4b\u4ed6\u7684\u95ed\u5408\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u53d1\u73b0\u9875\u9762\u54cd\u5e94\u4e865\u79d2\u4ee5\u4e0a\u624d\u52a0\u8f7d\u5b8c\u6210\uff0c\u56e0\u6b64\u53ef\u4ee5\u5224\u65ad\u670d\u52a1\u5668\u6267\u884c\u4e86\u6211\u7684\u4ee3\u7801\uff0c\u5e76\u4e14\u662f\u5b57\u7b26\u578b\u6ce8\u5165\uff0c\u95ed\u5408\u65b9\u5f0f\u662f\u5355\u5f15\u53f7\u3002\u56e0\u6b64\u7f51\u7ad9\u7684\u670d\u52a1\u5668\u53ef\u4ee5\u8fdb\u884c\u65f6\u95f4\u76f2\u6ce8\u3002<\/p>\n\n\n\n
        \u63a5\u4e0b\u6765\u4ecb\u7ecd if()<\/strong> \u51fd\u6570\u3002if( \u6761\u4ef6\uff0c2  ,  3 )   \u51fd\u6570\u4e2d\u6709\u4e09\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u662f\u5224\u65ad\u7684\u6761\u4ef6\uff0c\u5982\u679c\u4e3a\u771f\uff0c\u5219\u6267\u884c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u7684\u8bed\u53e5\uff1b\u5982\u679c\u4e3a\u5047\uff0c\u5219\u6267\u884c\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e2d\u7684\u8bed\u53e5\u3002<\/p>\n\n\n\n
        \u628a if \u8bed\u53e5\u4e2d\u7684\u5224\u65ad\u6761\u4ef6\u5199\u6210 \u81ea\u5df1\u8981\u67e5\u8be2\u7684\u6570\u636e\u7684ascii\u7801\u7684\u5927\u5c0f\u5224\u65ad<\/strong>\uff0c\u540e\u4e24\u4e2a\u6267\u884c\u8bed\u53e5\u5199\u4e0a\u4e0d\u540c\u7684\u5ef6\u65f6\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u9875\u9762\u7684\u54cd\u5e94\u65f6\u95f4\u6765\u5224\u65ad\u8981\u67e5\u8be2\u7684\u503c\u3002<\/p>\n\n\n\n
        \"\"<\/div><\/figure>\n\n\n\n
        \u63a5\u4e0b\u6765\u4f9d\u65e7\u662f\u4e00\u4e2a\u4e2a\u5224\u65ad \u4e0d\u518d\u6f14\u793a<\/p>\n\n\n\n
        0x0C DNS\u5916\u5e26\u6ce8\u5165<\/h2>\n\n\n\n
        dns\u5e26\u5916\u6ce8\u5165\u5c5e\u4e8emysql\u6ce8\u5165\uff0c1<\/p>\n\n\n\n
        0x0D \u4e8c\u6b21\u6ce8\u5165<\/h2>\n\n\n\n
        \u6240\u8c13\u4e8c\u6b21\u6ce8\u5165\uff0c\u5c31\u662f\u5148\u628a\u8981\u6ce8\u5165\u7684\u8bed\u53e5\u60f3\u529e\u6cd5\u5b58\u8fdb\u6570\u636e\u5e93\u4e2d\uff0c\u7136\u540e\u5728web\u7a0b\u5e8f\u4e2d\uff0c\u67d0\u4e9b\u903b\u8f91\u64cd\u4f5c\u4f1a\u8c03\u7528\u4f60\u4f20\u5165\u7684\u8fd9\u4e2a\u8bed\u53e5\uff0c\u4ece\u800c\u8fdb\u884c\u6ce8\u5165\u3002<\/p>\n\n\n\n
        \u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6bd4\u5982\u8bf4\u6211\u6ce8\u518c\u4e00\u4e2a\u8d26\u6237\u65f6\uff0c\u6211\u7684\u8d26\u6237\u540d\u5199\u4e00\u4e2a\u6ce8\u5165\u7684\u8bed\u53e5\u3002\u7136\u540e\u6211\u767b\u5f55\u8fdb\u8d26\u53f7\uff0c\u5f53\u6211\u5c1d\u8bd5\u4fee\u6539\u5bc6\u7801\u65f6\uff0c\u540e\u7aef\u4ee3\u7801\u5c31\u8981\u627e\u5230\u6211\u8fd9\u4e2a\u7528\u6237\u7684\u8d26\u6237\u540d\u548c\u65e7\u7684\u5bc6\u7801\uff0c\u5047\u5982\u67e5\u627e\u7684\u540e\u7aef\u4ee3\u7801\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
        select * from users where id=' xxx '  and password=' xxx '      <\/code><\/pre>\n\n\n\n
        \u5047\u5982\u6211\u7684\u7528\u6237\u540d\u662f <\/p>\n\n\n\n
        admin' and updatexml(1,concat(0x7e,database()),3) --+<\/code><\/pre>\n\n\n\n
        \u90a3\u4e48\u6700\u540e\u62fc\u63a5\u7684\u8bed\u53e5\u5c31\u662f<\/p>\n\n\n\n
        select * from users where id='admin' and updatexml(1,concat(0x7e,database()),3) --+ '  and password=' xxx '     <\/code><\/pre>\n\n\n\n
        \u6700\u540e\u5c31\u662f\u62a5\u9519\u7684\u56de\u663e\u4fe1\u606f\u4e2d\u8fd4\u56de\u6570\u636e\u5e93\u540d\u3002<\/p>\n\n\n\n
        \u4f46\u8fd9\u91cc\u8981\u6ce8\u610f\u4e00\u70b9\uff0c\u5c31\u662f\u5728\u521b\u5efa\u8d26\u6237\u63d2\u8fdb\u6570\u636e\u65f6\uff0c\u5047\u5982\u8bf4\u4f20\u5230\u540e\u7aef\u7684\u6570\u636e\u4e0d\u8fdb\u884c\u9b54\u672f\u5f15\u53f7\u8f6c\u4e49<\/strong>\uff0c\u56e0\u4e3a\u7528\u6237\u540d\u548c\u5bc6\u7801\u80af\u5b9a\u662f\u5b57\u7b26\u578b\uff0c\u4e0d\u53ef\u80fd\u5b58\u5728\u6570\u5b57\u578b\u7684\uff0c\u56e0\u6b64\u5047\u8bbe\u63d2\u5165\u7684sql\u8bed\u53e5\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
        insert into users (username, password) values ( '  ' , '  ' );<\/code><\/pre>\n\n\n\n
        \u6240\u4ee5\u5f53\u6211\u4eec\u63d0\u4ea4\u6211\u4eec\u7684\u7528\u6237\u540d\u65f6\uff0c\u5b9e\u9645\u4e0a\u540e\u7aef\u4ee3\u7801\u91cc\u7684\u63d2\u5165\u8bed\u53e5\u5c31\u53d8\u6210\u4e86\uff1a<\/p>\n\n\n\n
        insert into users (username, password) values ( 'admin' and updatexml(1,concat(0x7e,database()),3) --+ ' , ' admin666 ' );<\/code><\/pre>\n\n\n\n
        \u672c\u6765\u540e\u9762\u7684\u62ec\u53f7\u5185\u8981\u4e24\u4e2a\u53c2\u6570\uff0c\u4f46\u662f\u56e0\u4e3a\u95ed\u5408\u7b26\u548c–+\u6ce8\u91ca\u7684\u539f\u56e0\uff0c\u53ea\u6709\u4e00\u4e2a\u53c2\u6570\u4e86\uff0c\u56e0\u6b64\u9700\u8981\u6dfb\u52a0\u4e00\u4e2a\u8f6c\u4e49\u5b57\u7b26   \\   \u539f\u6765\u7684\u63d2\u5165\u8bed\u53e5\u53d8\u6210<\/p>\n\n\n\n
        insert into users (username, password) values ( 'admin\\' and updatexml(1,concat(0x7e,database()),3) --+ ' , ' admin666 ' );<\/code><\/pre>\n\n\n\n
        \u8fd9\u91cc\u8f6c\u4e49\u5b57\u7b26\u7684\u4f5c\u7528\u662f\u5c06\u5177\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\u6807\u8bc6\u4e3a\u666e\u901a\u5b57\u7b26\uff0c\u56e0\u6b64\u80fd\u591finsert\u8fdb\u6570\u636e\u5e93\u3002<\/p>\n\n\n\n
        \u9b54\u672f\u5f15\u53f7\u8f6c\u4e49\u672c\u6765\u662f\u7528\u6765\u9632\u6b62\u4e00\u6b21\u6ce8\u5165\u7684\uff0c\u56e0\u4e3a\u4f1a\u628a\u7528\u6237\u8f93\u5165\u7684\u5f15\u53f7\u4e4b\u7c7b\u7684\u7b26\u53f7\u8f6c\u4e49\u6210\u666e\u901a\u5b57\u7b26\uff0c\u8ba9\u6ce8\u5165\u4e0d\u8d77\u4f5c\u7528\uff1b\u4f46\u662f\u9b54\u672f\u5f15\u53f7\u8f6c\u4e49\u5374\u6210\u4e86\u4e8c\u6b21\u6ce8\u5165\u7684\u5fc5\u8981\u6761\u4ef6\u3002<\/p>\n\n\n\n
        0x0E \u5806\u53e0\u6ce8\u5165<\/h2>\n\n\n\n
        \u5806\u53e0\u6ce8\u5165\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u901a\u8fc7\u6dfb\u52a0\u5206\u53f7 ; \u6765\u6267\u884c\u591a\u6761sql\u8bed\u53e5\uff0c\u56e0\u6b64\u5fc5\u987b\u6ee1\u8db3\u4e00\u4e0b\u6761\u4ef6\uff1a<\/p>\n\n\n\n
          \n
        • \u670d\u52a1\u5668\u5728\u8bbf\u95ee\u6570\u636e\u5e93\u65f6\u80fd\u4e00\u6b21\u6267\u884c\u591a\u6761\u8bed\u53e5\uff0c\u6bd4\u5982php\u4e2d\u7684 mysqli_multi_query\u51fd\u6570\uff0c\u6253\u5f00\u540e\u80fd\u4e00\u6b21\u6267\u884c\u591a\u6761\u8bed\u53e5<\/li>\n\n\n\n
        • \u76ee\u6807\u672a\u5bf9  ; \u8fdb\u884c\u8fc7\u6ee4<\/li>\n<\/ul>\n\n\n\n
          <\/h2>\n\n\n\n
          <\/p>\n","protected":false},"excerpt":{"rendered":"
          0x00 sql\u6ce8\u5165\u7684\u6ce8\u5165\u70b9\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662fget\u578b\u6ce8\u5165\uff0c\u4e00\u822c\u50cfurl\u4e0a\u7684\u53c2\u6570\uff08?id=1\uff09\uff1b\u4e00\u79cd\u662fpost\u578b\u6ce8 […]<\/p>\n","protected":false},"author":1,"featured_media":210,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-200","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=200"}],"version-history":[{"count":11,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/200\/revisions"}],"predecessor-version":[{"id":255,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/200\/revisions\/255"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/media\/210"}],"wp:attachment":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=200"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}