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Results tagged with file-upload
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user 5400
File upload means sending a file from a local system to a remote system such as a server or another client with the intent that the remote system should store a copy of the file being transferred.
1
vote
File Upload - scan in-memory or after saving
If your goal is to scan the files before they hit the filesystem, scanning the data in memory after the web server handles the upload from a HTTP form is unlikely to resolve that, because almost every …
- 136k
2
votes
Accepted
Pentesting file Upload feature
Your approach is fine for finding vulnerable systems, but it's likely not vulnerable.
The file you uploaded isn't guaranteed to be in any publicly accessible directory. It may be stored outside of th …
- 136k
8
votes
Accepted
.JPEG File upload shell via EXIF comments
What they're saying is the following:
The upload page does not enforce file extensions, and allows you to upload an image file with an extension of .aspx.
You can embed code inside a JPEG's EXIF com …
- 136k
2
votes
Accepted
Are there risks in user-uploaded .txt files sent as a string to PHP
Anything you do on the client-side can be ignored by an attacker. They don't even need to visit your web page in order to send requests to the PHP script - they can send those requests directly with w …
- 136k
9
votes
Accepted
Worst case scenario of having the ability to remotely write files to disk as admin
Ok, this is a pretty nasty flaw. If directory traversal is possible, the attacker might overwrite often-used executables in order to infect the box with malware. From there, the rest of the network co …
- 136k
5
votes
Is it necessary to scan users' file uploads by antivirus?
In scenario 1, you can safely assume that the content will not be executed on the server, and the user will be forced to download the file rather than viewing it in their browser. This is reasonably s …
- 136k