[jira] [Commented] (SSHD-605) VirtualFileSystemFactory allows escaping from root

["Albert Ho (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SSHD-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236286#comment-15236286 ] 

Albert Ho commented on SSHD-605:
--------------------------------

Hi all, I took a look at the fix for this ticket and verified that the bug still exists in Apache SSHD 1.1.0 and 1.2.0.

I have a fix for this ticket locally, including extensive unit tests on the RootedFileSystemProvider.  I would be happy to take this on (assuming my employer authorizes it).  

You can follow the thread here: http://www.mail-archive.com/dev@mina.apache.org/msg26592.html



> VirtualFileSystemFactory allows escaping from root
> --------------------------------------------------
>
>                 Key: SSHD-605
>                 URL: https://issues.apache.org/jira/browse/SSHD-605
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>         Environment: Windows, JDK 7
>            Reporter: Damien B
>            Assignee: Goldstein Lyor
>              Labels: security
>             Fix For: 1.1.0
>
>
> Possibly Windows only.
> I start a SFTP server like this:
> sshd = SshServer.setUpDefaultServer();
> [...]
> sshd.setFileSystemFactory(new VirtualFileSystemFactory(myRootDir.getCanonicalPath()));
> [...]
> sshd.setSubsystemFactories(Arrays.<NamedFactory<Command>>asList(new SftpSubsystemFactory()));
> I connect to the server with FileZilla.
> Upon connexion, the files in myRooDir correctly appear under the server path '/'. But if I cd to '/c:/Windows/', the files in C:\Windows\ appear, escaping the VFS root.



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