🛡️ CVE-2009-5011 — pyftpdlib

⚪ Unknown ✅ No Known Exploit CWE-362 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in pyftpdlib

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2009-5011 is classified as CWE-362: Race Condition. Concurrent operations share state without proper synchronisation, so timing decides whether the result is correct.

Affected software

CVE-2009-5011 is recorded against 1 package.

  • pyftpdlib (fixed in 0.5.2)

Timeline and source

Published on 2 May 2022 and last revised on 15 October 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)
code.google.com (Web)
code.google.com (Web)
code.google.com (Web)
code.google.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE CWE-362
Public Exploit ✅ No
Source OSV
Published 2022-05-02
Updated 2026-08-12
Modified 2024-10-15
Fix URL N/A

Affected Packages

Software From version Fixed in
pyftpdlib — 0.5.2

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