CVE-2007-6738: pyftpdlib Use of Insufficiently Random Values of port selection on PASV command

May 1, 2022 (updated October 21, 2024)

pyftpdlib before 0.1.1 does not choose a random value for the port associated with the PASV command, which makes it easier for remote attackers to obtain potentially sensitive information about the number of in-progress data connections by reading the response to this command.

References

github.com/advisories/GHSA-gh7c-cg3x-pmcr
github.com/giampaolo/pyftpdlib
github.com/giampaolo/pyftpdlib/commit/d171bdc4ef7ac769671946a8a3e5eaafc39a9202
github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-22.yaml
nvd.nist.gov/vuln/detail/CVE-2007-6738

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