CVE-2021-37533

Description

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.

Weakness classification

• security@apache.org: CWE-20

Primary references

• security@apache.org — Issue Tracking, Mailing List, Third Party Advisory
• security@apache.org — Issue Tracking, Mailing List, Vendor Advisory
• security@apache.org — Mailing List, Third Party Advisory
• security@apache.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Mailing List, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory