giampaolo/pyftpdlib · Security
Concurrent Execution using Shared Resource with Improper Synchronization in pyftpdlib
- GHSA ID
- GHSA-hw4g-fhcp-x5mq
- CVE ID
- CVE-2010-3494
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v4
- 8.7 · 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
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.
CWEs
- CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
References
- https://nvd.nist.gov/vuln/detail/CVE-2010-3494 ↗
- https://bugs.launchpad.net/zodb/+bug/135108 ↗
- http://bugs.python.org/issue6706 ↗
- http://code.google.com/p/pyftpdlib/issues/detail?id=104 ↗
- http://code.google.com/p/pyftpdlib/issues/detail?id=105 ↗
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py ↗
- http://www.openwall.com/lists/oss-security/2010/09/09/6 ↗
- http://www.openwall.com/lists/oss-security/2010/09/11/2 ↗
- http://www.openwall.com/lists/oss-security/2010/09/22/3 ↗
- http://www.openwall.com/lists/oss-security/2010/09/24/3 ↗
- https://github.com/advisories/GHSA-hw4g-fhcp-x5mq ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-11.yaml ↗
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY ↗
- http://code.google.com/p/pyftpdlib/source/detail?r=556 ↗