Improper privilege management in pyftpdlib
The ftp_PORT function in FTPServer.py in pyftpdlib before 0.2.0 does not prevent TCP connections to privileged ports if the destination IP address matches the source IP address of the connection from the FTP client, which might allow remote authenticated users to conduct FTP bounce attacks via crafted FTP data, as demonstrated by an FTP bounce attack against a NAT server, a related issue to CVE-1999-0017.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pyftpdlib | < 0.2.0 | 0.2.0 |
References
- http://code.google.com/p/pyftpdlib/source/detail?r=32
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- http://code.google.com/p/pyftpdlib/issues/detail?id=11
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn32&r=32&format=side&path=/trunk/pyftpdlib/FTPServer.py
- https://github.com/advisories/GHSA-8xgx-75qw-6268
- https://nvd.nist.gov/vuln/detail/CVE-2007-6741
- https://github.com/giampaolo/pyftpdlib/issues/11
- https://github.com/giampaolo/pyftpdlib
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-25.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-269- Platform
- Python (PyPI)
- Package
pyftpdlib- Disclosed
- 19.10.2010
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2010-25 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-8xgx-75qw-6268 - CC BY 4.0
Vulnerability history: pyftpdlib
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 10.2010 10.2010
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 5
- Medium 9
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
earlier: 14
-
Improper privilege management in pyftpdlib this entry
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