Secunia

Luigi Auriemma has reported some vulnerabilities in Easy File Sharing Web Server, which can be exploited by malicious people to disclose sensitive information and by malicious users to compromise a vulnerable system.

1) Input passed to unspecified parameters is not properly sanitised when uploading files. This can be exploited to upload files to arbitrary parent directories via directory traversal attacks.

2) An error exists when processing file download requests. This can be exploited to download any ".sdb" database file except "admin.sdb" or "user.sdb".

3) An error exists when processing username registration requests. This can be exploited to disclose the contents of arbitrary files in the users folder by creating an account with the username equal to the name of the file.

The vulnerabilities are reported in version 4.5. Other versions may also be affected.

Solution
Restrict access to trusted users only. The vendor will reportedly fix the vulnerabilities in a future version.

Provided and/or discovered by
Luigi Auriemma

Original Advisory
http://aluigi.altervista.org/adv/efsup-adv.txt

Deep Links
Links available in Customer Area