Vulnerabilities > CVE-2021-37533
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
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.
Vulnerable Configurations
References
- http://www.openwall.com/lists/oss-security/2022/12/03/1
- http://www.openwall.com/lists/oss-security/2022/12/03/1
- https://lists.apache.org/thread/o6yn9r9x6s94v97264hmgol1sf48mvx7
- https://lists.apache.org/thread/o6yn9r9x6s94v97264hmgol1sf48mvx7
- https://lists.debian.org/debian-lts-announce/2022/12/msg00038.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00038.html
- https://www.debian.org/security/2022/dsa-5307
- https://www.debian.org/security/2022/dsa-5307