CVE-2010-3494
HIGH7.5EPSS 0.41%Concurrent Execution using Shared Resource with Improper Synchronization in pyftpdlib
Published: 5/17/2022Modified: 4/28/2026
Also known as:DEBIAN-CVE-2010-3494
Description
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 accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.
Affected packages (3)
- Debian/python-pyftpdlibfrom 0, < 0.5.2-1
- PyPI/pyftpdlibfrom 0, < 0.5.2
- PyPI/pyftpdlibfrom 0, < 0.5.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (16)
- ADVISORYhttps://github.com/advisories/GHSA-hw4g-fhcp-x5mq
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2010-3494
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2010-3494
- PATCHhttps://github.com/giampaolo/pyftpdlib
- WEBhttp://bugs.python.org/issue6706
- WEBhttp://code.google.com/p/pyftpdlib/issues/detail?id=104
- WEBhttp://code.google.com/p/pyftpdlib/issues/detail?id=105
- WEBhttp://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- WEBhttp://code.google.com/p/pyftpdlib/source/detail?r=556
- WEBhttp://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py
- WEBhttps://bugs.launchpad.net/zodb/+bug/135108
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-11.yaml
- WEBhttp://www.openwall.com/lists/oss-security/2010/09/09/6
- WEBhttp://www.openwall.com/lists/oss-security/2010/09/11/2
- WEBhttp://www.openwall.com/lists/oss-security/2010/09/22/3
- WEBhttp://www.openwall.com/lists/oss-security/2010/09/24/3