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Can't use "Save as File" (request) in Burp due to the Java errors (lack of permissions????)

Cloufish | Last updated: Dec 07, 2020 03:41PM UTC

MAIN INFORMATION Operating System: Linux Default Java Version: java --version OpenJDK 14.0.2 2020-07-14 OpenJDK Runtime Environment (build 14.0.2+12) OpenJDK 64-Bit Server VM (build 14.0.2+12, mixed mode) stdout: ``` Your JRE appears to be version 14.0.2 from N/A Burp has not been fully tested on this platform and you may experience problems. WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by burp.f_6 (file:/usr/share/burpsuite/burpsuite.jar) to field javax.swing.JTree.expandedState WARNING: Please consider reporting this to the maintainers of burp.f_6 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: /home/cloufisz/PDG ??wiczenia 2 word.docx at java.base/sun.nio.fs.UnixPath.encode(UnixPath.java:145) at java.base/sun.nio.fs.UnixPath.<init>(UnixPath.java:69) at java.base/sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:279) at java.base/java.nio.file.Path.of(Path.java:147) at java.base/java.nio.file.Paths.get(Paths.java:69) at java.desktop/sun.awt.shell.ShellFolder.getShellFolder(ShellFolder.java:247) at java.desktop/javax.swing.filechooser.FileSystemView.getFiles(FileSystemView.java:523) at java.desktop/javax.swing.plaf.basic.BasicDirectoryModel$FilesLoader.run0(BasicDirectoryModel.java:290) at java.desktop/javax.swing.plaf.basic.BasicDirectoryModel$FilesLoader.run(BasicDirectoryModel.java:279) at java.base/java.lang.Thread.run(Thread.java:832) ``` image: https://imgur.com/i4Voske What is happening: The window with directories to choose from starts at /home directory. When I want to go to the directory listed, the cursor is hanging in an infinite loading loop and I can't save the request in a file. What should happen: I should be able to move to the directories freely. Is it because I'm using Java version 14.0?

Cloufish | Last updated: Dec 07, 2020 03:48PM UTC

Oh, now I see the logs clearly. So it seems like the app is not escaping "?" sign in directory browsing. After removing these everything works. I don't know if there's a solution for developers to escape some signs/letters in file directory browsing. Though I hope that this post will help some other Linux users :)

Hannah, PortSwigger Agent | Last updated: Dec 07, 2020 04:48PM UTC