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- 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。1 C0 Q6 Y/ A* N2 D" J
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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。8 _8 N; a' I$ h: o3 S3 @$ l% R
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简单介绍一下这篇文章吧。
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开启WP错误记录功能
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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3 i& X/ b* a8 [; t7 X4 B) [
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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\'6 ?6 j; I X7 o3 o2 T
[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--
4 @/ ^* t3 b- |[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--! z: m# u" f8 W1 D7 v
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。 ! b; k, [2 T! C. F1 e: P
SQL盲注扫描
# U! a' y% ^- a. V5 F6 J攻击者使用了类似"waitfor delay"和"benchmark"这样的函数来盲注。
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' {* q! P5 {. ?. r, Y1 r y( J[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\'--/ y1 j8 i( j; p5 v7 F! O
[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 G" u' u, Y5 I6 hGoogle一下大规模扫描
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2 a7 g# n2 z; d* q$ _) }0 \ 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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8 O) R' q$ C, }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。0 P) x( b) P; Y( m7 I4 E( G- p
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