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标题: 从WordPress错误日志里发现SQL注入扫描攻击 [打印本页]

作者: admin 时间: 2013-1-11 21:23
标题: 从WordPress错误日志里发现SQL注入扫描攻击

这篇文章介绍了当WordPress开启错误记录以后，根据error_log来发现SQL注入攻击的思路。
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0 |' c2 I3 v6 u* f( P) r5 d吸引Cocoa的是这个博客其实是TrustWave公司下属的一个叫Spiderlab团队的官方博客，貌似比较有意思。例如它提到了Honeypot Alert这个标签里的文章都是分析他们一个Web蜜罐的Apache access_log日志的。" m* Q/ e" ~- C. W2 S& s8 N  [5 j

% t6 u* \  p1 Q7 U简单介绍一下这篇文章吧。
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& w( }4 h5 o3 D+ Y/ U开启WP错误记录功能
- s9 X: ~7 [- U; W* |2 U只需要修改wp-config.php的如下几行：" `. g2 f" i0 J! e/ m; b) l
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@ini_set('log_errors','On'); @ini_set('display_errors','Off'); @ini_set('error_log','/home/example.com/logs/php_error.log');SQL 注入扫描
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[07-Dec-2012 02:40:49] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id = -1\'' at line 1 for query SELECT text, author_id, date FROM  WHERE id = -1\'- X# H0 ~. T) C  \  U; z4 o
[07-Dec-2012 02:40:50] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id = 999999.9 UNION ALL SELECT 0x31303235343830303536--' at line 1 for query SELECT text, author_id, date FROM  WHERE id = 999999.9 UNION ALL SELECT 0x31303235343830303536--
3 h8 ^8 s4 b2 u% P5 C. s( {[07-Dec-2012 02:40:53] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id = 999999.9 UNION ALL SELECT 0x31303235343830303536,0x313032353438303035' at line 1 for query SELECT text, author_id, date FROM  WHERE id = 999999.9 UNION ALL SELECT 0x31303235343830303536,0x31303235343830303536--
( V( a) E; K) g% }0 g3 `+ R上面的日志就是在暴力猜解表的列数，那个巨大的十六进制值会被解析成null。 + Z& s8 c3 b% e" _* y& E# T
SQL盲注扫描+ m" H/ D+ Z( ^, }* G
攻击者使用了类似"waitfor delay"和"benchmark"这样的函数来盲注。- _5 P8 w& }( S* f
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[07-Dec-2012 02:43:21] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id = -1; if (1=1) waitfor delay \'00:00:05\'--' at line 1 for query SELECT text, author_id, date FROM  WHERE id = -1; if (1=1) waitfor delay \'00:00:05\'--
0 o) n3 U1 N# I$ c[07-Dec-2012 02:43:27] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id = -1 and if(1=1,BENCHMARK(8623333,MD5(0x41)),0)' at line 1 for query SELECT text, author_id, date FROM  WHERE id = -1 and if(1=1,BENCHMARK(8623333,MD5(0x41)),0)- _1 [( }: ~3 J9 W( l) a7 `: X! e! e
Google一下大规模扫描, I7 z7 ~/ n& }, ~- a7 T! R; l* n' }

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                           僵尸网络控制着可能使用被感染主机来识别潜在的目标。下面是该公司的蜜罐捕获到的一个RFI（远程文件包含）攻击代码里的片段：
sub google() { my @list; my $key = $_[0]; for (my $i=0; $i<=400; $i+=10){ my $search = ("http://www.google.com/search?q=".&key($key)."&num=100&filter=0&start=".$i); my $res = &search_engine_query($search); while ($res =~ m/<a href="\"?http:\/\/([^">\"]*)\//g) { if ($1 !~ /google/){ my $link = $1; my @grep = &links($link); push(@list,@grep); } } } return @list；
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Cocoa总结：文章比较简单，但是从日志来检测攻击貌似是目前流行的一个方向。

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