Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [day] [month] [year] [list]
Date: Sat, 03 Dec 2022 14:39:09 +0000
From: "Gary D. Gregory" <>
Subject: CVE-2021-37533: Apache Commons Net's FTP client trusts the host
 from PASV response by default 

Severity: low


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

This issue is being tracked as NET-711


Apache Commons would like to thank ZeddYu Lu for reporting this issue.

Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.