medium6.5
CVE-2021-37533
Apache Commons Net vulnerable to information leakage via malicious server
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | commons-net:commons-net | < 3.9.0 | 3.9.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Commons Net | before 3.9.0 |
| Debian | Debian Linux | Versions 10.0, 11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://www.openwall.com/lists/oss-security/2022/12/03/1
- https://lists.apache.org/thread/o6yn9r9x6s94v97264hmgol1sf48mvx7
- https://lists.debian.org/debian-lts-announce/2022/12/msg00038.html
- https://www.debian.org/security/2022/dsa-5307
- https://github.com/advisories/GHSA-cgp8-4m63-fhh5
- https://nvd.nist.gov/vuln/detail/CVE-2021-37533
- https://github.com/apache/commons-net/commit/4fe1bae56e53f32756b1ca3296f3dd2c45e3e060
- https://issues.apache.org/jira/browse/NET-711