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CVE-2009-5010
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.1 allows remote attackers to cause a denial of service…
Medium4.3EPSS 1.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.1 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, a different vulnerability than CVE-2010-3494.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIpyftpdlibGHSA-mpg6-rgp4-35rr (opens in a new tab)
References (10)
- [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://code.google.com/p/pyftpdlib/issues/detail?id=91 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugs.launchpad.net/zodb/+bug/135108 (opens in a new tab)x_refsource_MISCx_transferred
- http://code.google.com/p/pyftpdlib/source/detail?r=439 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://bugs.python.org/issue6706 (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&format=side&path=/trunk/pyftpdlib/ftpserver.py (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mpg6-rgp4-35rr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-5010)Record last updated .