Skip to content
Fencer Intel
medium 4.0

CVE-2009-5013 json

Uncontrolled Resource Consumption in pyftpdlib

published 16y ago modified 4mo ago also GHSA-8gv6-x88p-3f6h , PYSEC-2010-10 , EUVD-2010-0014

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi pyftpdlib 0.5.2
  • python-pyftpdlib Debian 14, Debian 13, Debian 12 0.5.2-1

debian advisories DEBIAN-CVE-2009-5013

Is CVE-2009-5013 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-5013 updated cvss 4.0

pyftpdlib: DoS (memory consumption) by sending a QUIT command during a data transfer

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.75% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected packages

ecosystem package affected fixed in
pypi pyftpdlib
<0.5.2
0.5.2

Classification

Weakness
  • CWE-399 Resource Management Errors
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.