CVE-2007-6741
Improper privilege management in pyftpdlib
CVE-2007-6741 is a medium vulnerability (CVSS 6.5) in G.rodola Pyftpdlib, published October 19, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.75%, the 78th percentile. Fixed in pyftpdlib 0.2.0.
- Severity
- 6.5 MediumCVSS 2.0, NVD
- Exploit chance
- 1.75%EPSS, 78th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.2.0pyftpdlib
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.
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyftpdlibPyPI | before 0.2.0 | 0.2.0 |
What each source reports
NVD Score used
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.
- Record
CVE-2007-6741- CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2007-6741- Updated
- 2026-11-02
EUVDEUVD-2010-0021No score
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.
- Record
EUVD-2010-0021- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8xgx-75qw-6268
Improper privilege management in pyftpdlib
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.
- Record
GHSA-8xgx-75qw-6268- CVSS 4.0
- 5.3 Medium
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
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-269
- Updated
- 2026-11-02
OSVGHSA-8xgx-75qw-6268
Improper privilege management in pyftpdlib
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.
- Record
GHSA-8xgx-75qw-6268- CVSS 4.0
- 5.3 Medium
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
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-269
- Updated
- 2026-11-02
OSVPYSEC-2010-25No score
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.
- Record
PYSEC-2010-25- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| affected, aliases, cwes, facts, references, title | GitHub Advisories, OSV | |
| first indexed | CVE List, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
nvd.nist.gov/vuln/detail/CVE-2007-6741
github.com/giampaolo/pyftpdlib/issues/11