One dedecms variable coverage holes of the wretched use of the method-vulnerability warning-the black bar safety net

The most recent dedecms variable coverage holes, and finally can control the global variables, but can not completely control $GLOBALS$v1 .= $v2; Note that there is a sliding scale, is in an initialized global variable content on a sliding scale the content. It has now been disclosed the exploit...

Dedecms v57 sp1 plus/download.php SQL注入漏洞

起因是全局变量$GLOBALS可以被任意修改，随便看了下，漏洞一堆，我只找了一处。 codeinclude/dedesql.class.php ifisset$GLOBALS'arrs1' $v1 = $v2 = ''; for$i=0;isset$arrs1$i;$i++ $v1 .= chr$arrs1$i; for$i=0;isset$arrs2$i;$i++ $v2 .= chr$arrs2$i; //解码ascii $GLOBALS$v1 .= $v2; //注意这里不是覆盖，是+ function SetQuery$sql $prefix="@"; $sql =...