Moderate severityNVD Advisory· Published Oct 19, 2010· Updated Jun 16, 2026
CVE-2009-5011
CVE-2009-5011
Description
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the getpeername function having an ENOTCONN error, a different vulnerability than CVE-2010-3494.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pyftpdlibPyPI | < 0.5.2 | 0.5.2 |
Affected products
8cpe:2.3:a:g.rodola:pyftpdlib:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:a:g.rodola:pyftpdlib:*:*:*:*:*:*:*:*range: <=0.5.1
- cpe:2.3:a:g.rodola:pyftpdlib:0.1:*:*:*:*:*:*:*
- cpe:2.3:a:g.rodola:pyftpdlib:0.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:g.rodola:pyftpdlib:0.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:g.rodola:pyftpdlib:0.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:g.rodola:pyftpdlib:0.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:g.rodola:pyftpdlib:0.5.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-62xg-239j-vxg7ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2009-5011ghsaADVISORY
- code.google.com/p/pyftpdlib/issues/detailnvdWEB
- code.google.com/p/pyftpdlib/source/browse/trunk/HISTORYnvdWEB
- code.google.com/p/pyftpdlib/source/detailnvdWEB
- code.google.com/p/pyftpdlib/source/diffnvdWEB
- github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-8.yamlghsaWEB
News mentions
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