The ftp_PORT function in FTPServer.py in pyftpdlib before 0.2.0 does not prevent TCP connections to privileged ports if the destination IP address matches the source IP address of the connection from the FTP client, which might allow remote authenticated users to conduct FTP bounce attacks via crafted FTP data, as demonstrated by an FTP bounce attack against a NAT server, a related issue to CVE-1999-0017
Published Oct 19, 2010
5.3
MEDIUMCVSS 4.0
EPSS 1.75%
Description
The ftp_PORT function in FTPServer.py in pyftpdlib before 0.2.0 does not prevent TCP connections to privileged ports if the destination IP address matches the source IP address of the connection from the FTP client, which might allow remote authenticated users to conduct FTP bounce attacks via crafted FTP data, as demonstrated by an FTP bounce attack against a NAT server, a related issue to CVE-1999-0017.
Affected products
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01750) | 77.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.77% (0.01769) | 75.15th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.61% (0.00606) | 67.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00225) | 61.65th | v3 (v2023.03.01) |
| May 10, 2024 | 0.27% (0.00270) | 67.64th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.26% (0.00257) | 65.06th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.24% (0.00238) | 60.86th | v3 (v2023.03.01) |
| Jun 9, 2023 | 0.26% (0.00255) | 62.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.27% (0.00272) | 62.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.13% (0.01132) | 56.11th | v2 (v2022.01.01) |
| Sep 22, 2022 | 1.13% (0.01132) | 54.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.13% (0.01132) | 52.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.13% (0.01132) | 30.65th | v2 (v2022.01.01) |
References (8)
- http://code.google.com/p/pyftpdlib/issues/detail?id=11 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/detail?r=32 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn32&r=32&format=side&path=/trunk/pyftpdlib/FTPServer.py x_refsource_CONFIRM
- https://github.com/advisories/GHSA-8xgx-75qw-6268 Advisory
- https://github.com/giampaolo/pyftpdlib/issues/11
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-25.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2007-6741
Change history (0)
No recorded changes yet.