Apache Commons Net vulnerable to information leakage via malicious server
Moderate severity
GitHub Reviewed
Published
Dec 3, 2022
to the GitHub Advisory Database
•
Updated Feb 2, 2023
Description
Published by the National Vulnerability Database
Dec 3, 2022
Published to the GitHub Advisory Database
Dec 3, 2022
Reviewed
Dec 5, 2022
Last updated
Feb 2, 2023
Prior to Apache Commons Net 3.9.0, Net's FTP client trusts the host from PASV response by default. A malicious server can redirect the Commons Net code to use a different host, but the user has to connect to the malicious server in the first place. This may lead to leakage of information about services running on the private network of the client.
The default in version 3.9.0 is now false to ignore such hosts, as cURL does. See https://issues.apache.org/jira/browse/NET-711.
References