CVE-2009-5010

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Summary

CVECVE-2009-5010
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2010-10-19 20:00:02 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionRace 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.

Risk And Classification

Primary CVSS: v2.0 4.3 from [email protected]

AV:N/AC:M/Au:N/C:N/I:N/A:P

Problem Types: CWE-362 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:M/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application G.rodola Pyftpdlib 0.1 All All All
Application G.rodola Pyftpdlib 0.1.1 All All All
Application G.rodola Pyftpdlib 0.2.0 All All All
Application G.rodola Pyftpdlib 0.3.0 All All All
Application G.rodola Pyftpdlib 0.4.0 All All All
Application G.rodola Pyftpdlib All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Bug #135108 “mac osx socket.accept return None instead of """ : Bugs : ZODB af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net
oss-security - Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
oss-security - Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
Issue 6706: asyncore's accept() is broken - Python tracker af854a3a-2127-422b-91ae-364da2661108 bugs.python.org Patch
GitHub - giampaolo/pyftpdlib: Extremely fast and scalable Python FTP server library af854a3a-2127-422b-91ae-364da2661108 code.google.com
HISTORY - pyftpdlib - Project Hosting on Google Code af854a3a-2127-422b-91ae-364da2661108 code.google.com
oss-security - Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
pyftpdlib should handle the case when accept() returns None instead of a socket · Issue #91 · giampaolo/pyftpdlib · GitHub af854a3a-2127-422b-91ae-364da2661108 code.google.com
GitHub - giampaolo/pyftpdlib: Extremely fast and scalable Python FTP server library af854a3a-2127-422b-91ae-364da2661108 code.google.com
oss-security - CVE Request -- Python -- accept() implementation in async core is broken => more subcases af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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