{"id":"DEBIAN-CVE-2007-6263","details":"The dataconn function in ftpd.c in netkit ftpd (netkit-ftpd) 0.17, when certain modifications to support SSL have been introduced, calls fclose on an uninitialized file stream, which allows remote attackers to cause a denial of service (daemon crash) and possibly have unspecified other impact via some types of FTP over SSL protocol behavior, as demonstrated by breaking a passive FTP DATA connection in a way that triggers an error in the server's SSL_accept function. NOTE: the netkit ftp issue is covered by CVE-2007-5769.","modified":"2026-09-01T20:02:49.646882694Z","published":"2007-12-06T15:46:00Z","upstream":["CVE-2007-6263"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2007-6263"}],"affected":[{"package":{"name":"linux-ftpd-ssl","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux-ftpd-ssl?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.17.18+0.3-9.1"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-6263.json"}},{"package":{"name":"linux-ftpd-ssl","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux-ftpd-ssl?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.17.18+0.3-9.1"}]}],"versions":["0.17.12+0.3-2","0.17.18+0.3-3","0.17.18+0.3-3sarge1","0.17.18+0.3-4","0.17.18+0.3-5","0.17.18+0.3-6","0.17.18+0.3-6etch1","0.17.18+0.3-7","0.17.18+0.3-8","0.17.18+0.3-9"],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-6263.json"}}],"schema_version":"1.9.0"}