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CVE-2021-37533 Prior to Apache Commons Net 3.9.0, Net's FTP client trusts the host from PASV response by default
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Commons Net 3.9 | earliest → < 3.9.0 | 3.9.0 |
References
- lists.apache.org lists.apache.org
- [oss-security] 20221203 CVE-2021-37533: Apache Commons Net's FTP client trusts the host from PASV response by default www.openwall.com
- [debian-lts-announce] 20221229 [SECURITY] [DLA 3251-1] libcommons-net-java security update lists.debian.org
- DSA-5307 www.debian.org
Timeline
- Published
- Last modified