{"id":"UBUNTU-CVE-2020-35359","details":"Pure-FTPd 1.0.48 allows remote attackers to prevent legitimate server use by making enough connections to exceed the connection limit.","modified":"2026-05-20T16:04:26.302136567Z","published":"2020-12-26T05:15:00Z","upstream":["CVE-2020-35359"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-35359"},{"type":"REPORT","url":"https://www.exploit-db.com/exploits/49105"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-35359"}],"affected":[{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36-3.2","1.0.36-3.2build1","1.0.36-3.2+deb8u1build0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.36-3.2+deb8u1build0.16.04.1","binary_name":"pure-ftpd"},{"binary_version":"1.0.36-3.2+deb8u1build0.16.04.1","binary_name":"pure-ftpd-common"},{"binary_name":"pure-ftpd-ldap","binary_version":"1.0.36-3.2+deb8u1build0.16.04.1"},{"binary_version":"1.0.36-3.2+deb8u1build0.16.04.1","binary_name":"pure-ftpd-mysql"},{"binary_version":"1.0.36-3.2+deb8u1build0.16.04.1","binary_name":"pure-ftpd-postgresql"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35359.json"}},{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.46-1","1.0.46-1build1","1.0.46-1ubuntu18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.46-1ubuntu18.04.1","binary_name":"pure-ftpd"},{"binary_version":"1.0.46-1ubuntu18.04.1","binary_name":"pure-ftpd-common"},{"binary_name":"pure-ftpd-ldap","binary_version":"1.0.46-1ubuntu18.04.1"},{"binary_version":"1.0.46-1ubuntu18.04.1","binary_name":"pure-ftpd-mysql"},{"binary_version":"1.0.46-1ubuntu18.04.1","binary_name":"pure-ftpd-postgresql"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35359.json"}},{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.47-3build1","1.0.49-1","1.0.49-2","1.0.49-3","1.0.49-4","1.0.49-4ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"pure-ftpd","binary_version":"1.0.49-4ubuntu0.1"},{"binary_name":"pure-ftpd-common","binary_version":"1.0.49-4ubuntu0.1"},{"binary_version":"1.0.49-4ubuntu0.1","binary_name":"pure-ftpd-ldap"},{"binary_name":"pure-ftpd-mysql","binary_version":"1.0.49-4ubuntu0.1"},{"binary_name":"pure-ftpd-postgresql","binary_version":"1.0.49-4ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35359.json"}},{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.49-4.1build1","1.0.50-2","1.0.50-2.1","1.0.50-2.1ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"pure-ftpd","binary_version":"1.0.50-2.1ubuntu0.22.04.1"},{"binary_name":"pure-ftpd-common","binary_version":"1.0.50-2.1ubuntu0.22.04.1"},{"binary_version":"1.0.50-2.1ubuntu0.22.04.1","binary_name":"pure-ftpd-ldap"},{"binary_name":"pure-ftpd-mysql","binary_version":"1.0.50-2.1ubuntu0.22.04.1"},{"binary_name":"pure-ftpd-postgresql","binary_version":"1.0.50-2.1ubuntu0.22.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35359.json"}},{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.50-2.1build1","1.0.50-2.1ubuntu1","1.0.50-2.2","1.0.50-2.2build1","1.0.50-2.2build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.50-2.2build2","binary_name":"pure-ftpd"},{"binary_name":"pure-ftpd-common","binary_version":"1.0.50-2.2build2"},{"binary_name":"pure-ftpd-ldap","binary_version":"1.0.50-2.2build2"},{"binary_name":"pure-ftpd-mysql","binary_version":"1.0.50-2.2build2"},{"binary_name":"pure-ftpd-postgresql","binary_version":"1.0.50-2.2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35359.json"}},{"package":{"name":"pure-ftpd","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/pure-ftpd?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.50-2.2build3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.50-2.2build3","binary_name":"pure-ftpd"},{"binary_name":"pure-ftpd-common","binary_version":"1.0.50-2.2build3"},{"binary_name":"pure-ftpd-ldap","binary_version":"1.0.50-2.2build3"},{"binary_version":"1.0.50-2.2build3","binary_name":"pure-ftpd-mysql"},{"binary_name":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