CVE-2007-6737: Improper Authentication in pyftpdlib

May 1, 2022 (updated October 21, 2024)

FTPServer.py in pyftpdlib before 0.2.0 does not increment the attempted_logins count for a USER command that specifies an invalid username, which makes it easier for remote attackers to obtain access via a brute-force attack.

References

github.com/advisories/GHSA-9x66-ghqx-8g5r
github.com/giampaolo/pyftpdlib
github.com/giampaolo/pyftpdlib/issues/20
github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-21.yaml
nvd.nist.gov/vuln/detail/CVE-2007-6737

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