CVE-2009-5011
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.91% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 59.8% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2010-10-19 19:00Z16 YR AGO
- Last updated
- 2024-09-17 02:42Z2 YR AGO
- Reserved
- 2010-10-19
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
- Data version
- 5.1
- Document digest
- ead374228e95097a9c9a5bb7199046340a9da7a299bbbe57d5307e6c97f41c6b
05 Affected products
06 References
- code.google.comhttp://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- code.google.comhttp://code.google.com/p/pyftpdlib/issues/detail?id=100
- code.google.comhttp://code.google.com/p/pyftpdlib/source/detail?r=543
- code.google.comhttp://code.google.com/p/pyftpdlib/source/diff?spec=svn543&r=543&format=side&path=/trunk/pyftpdlib/ftpserver.py
07 Fixed in
Debian 12
- python-pyftpdlib Fixed in 0.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- python-pyftpdlib Fixed in 0.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- python-pyftpdlib Fixed in 0.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.