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。 ! O1 @ r& T% J; z' ? ~5 \' d/ j) n% ~ H( y# _/ ~6 A* v; w
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。 ' i# Y3 ]) q- x: I1 S; `9 I8 J8 G4 i' D
简单介绍一下这篇文章吧。" e. l$ i2 Q6 G( }; Y" k) e
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开启WP错误记录功能 5 r* @4 f. M$ ]& l9 P) T只需要修改wp-config.php的如下几行：( G/ i, f8 z: c
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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' F: a% K% Y: S9 }
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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\') X3 P$ n$ `( H8 C
[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-- C1 x0 e' V2 e% F[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! M; E7 s7 }5 f7 f
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, O, d/ W4 |2 Q, |; l/ L
SQL盲注扫描$ a; j( X0 ~) H5 s# R9 @1 i
攻击者使用了类似"waitfor delay"和"benchmark"这样的函数来盲注。) n1 z! e ^( E# a" f+ b0 E! M+ U
/ B8 W4 r6 b$ S! Z+ }8 Y% i[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\'-- " X0 Z) }- b3 o) b* |8 j) y. D- d* t2 U[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) 2 G* j. A: ? n: PGoogle一下大规模扫描( i- I# H* z+ y& [% W9 r0 }
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/ Y: F' F& F+ V) V % q3 b9 n7 D4 Q# [& P 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； 2 K0 c% L9 K' F$ P, n# x
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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。 " [$ W* m! H) [9 I