CVE-2009-5013
Uncontrolled Resource Consumption in pyftpdlib
CVE-2009-5013 is a medium vulnerability (CVSS 4.0) in G.rodola Pyftpdlib, published October 19, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.75%, the 78th percentile. Fixed in pyftpdlib 0.5.2.
- Severity
- 4.0 MediumCVSS 2.0, NVD
- Exploit chance
- 1.75%EPSS, 78th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.5.2pyftpdlib +4 more
Description
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyftpdlibPyPI | through 0.5.1 | 0.5.2 |
python-pyftpdlibDebian:12 | before 0.5.2-1 | 0.5.2-1 |
python-pyftpdlibDebian:13 | before 0.5.2-1 | 0.5.2-1 |
python-pyftpdlibDebian:14 | before 0.5.2-1 | 0.5.2-1 |
pyftpdlibPyPI | before 0.5.2, plus listed versions 0.2.00.3.00.4.00.5.00.5.1 | 0.5.2 |
What each source reports
NVD Score used
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
CVE-2009-5013- CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE ListNo score
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
CVE-2009-5013- Updated
- 2026-11-02
EUVDEUVD-2010-0014No score
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
EUVD-2010-0014- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8gv6-x88p-3f6h
Uncontrolled Resource Consumption in pyftpdlib
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
GHSA-8gv6-x88p-3f6h- CVSS 4.0
- 6.0 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVGHSA-8gv6-x88p-3f6h
Uncontrolled Resource Consumption in pyftpdlib
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
GHSA-8gv6-x88p-3f6h- CVSS 4.0
- 6.0 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVNo score
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
CVE-2009-5013- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-5013No score
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
DEBIAN-CVE-2009-5013- Updated
- 2026-11-02
OSVPYSEC-2010-10No score
Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.
- Record
PYSEC-2010-10- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
code.google.com/p/pyftpdlib/source/diff?spec=svn615&r=615&format=side&path=/trunk/pyftpdlib/ftpserver.py
nvd.nist.gov/vuln/detail/CVE-2009-5013
github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-10.yaml
security-tracker.debian.org/tracker/CVE-2009-5013