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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。
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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。
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简单介绍一下这篇文章吧。
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0 Z, M& S7 q, }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
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" H3 q$ H7 J4 k, \4 R) ]8 {[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\'
/ R2 M' U4 Q! X+ O8 `) G[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--2 w: E3 r( Q+ @' S3 ?3 X( p
[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/ p0 q y* q. `/ N
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。 + ~; [6 S$ s3 G
SQL盲注扫描6 m/ ^/ P) j) X
攻击者使用了类似"waitfor delay"和"benchmark"这样的函数来盲注。 _+ m1 z3 _5 O6 \4 e7 f
. z- {! _* h3 @6 X3 L$ B0 w[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\'--& S; o+ z" J/ w
[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 k" P! h2 `$ T" F( \
Google一下大规模扫描8 V8 P* b/ n3 R0 {3 w+ Z* P
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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;7 m$ t2 W) p9 F/ k/ Y8 z" a0 U8 f' y
) ~. B# M; X" j9 S8 u# z4 ?0 ]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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