CVE-2010-3494
Concurrent Execution using Shared Resource with Improper Synchronization in pyftpdlib
7.5
HIGH
CVSS 3.1
EPSS 0.41%
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.
How to fix CVE-2010-3494
To remediate CVE-2010-3494, upgrade the affected package to a fixed version below.
- —upgrade to 0.5.2-1 or later
- —upgrade to 0.5.2 or later
- —upgrade to 0.5.2 or later
Is CVE-2010-3494 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 0.5.2-1
- from 0, < 0.5.2
- from 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 |