{"id":"DEBIAN-CVE-2006-6171","details":"ProFTPD 1.3.0a and earlier does not properly set the buffer size limit when CommandBufferSize is specified in the configuration file, which leads to an off-by-two buffer underflow.  NOTE: in November 2006, the role of CommandBufferSize was originally associated with CVE-2006-5815, but this was an error stemming from a vague initial disclosure.  NOTE: ProFTPD developers dispute this issue, saying that the relevant memory location is overwritten by assignment before further use within the affected function, so this is not a vulnerability","modified":"2026-09-12T06:47:29.220998025Z","published":"2006-11-30T15:28:00Z","upstream":["CVE-2006-6171"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2006-6171"}],"affected":[{"package":{"name":"proftpd-dfsg","ecosystem":"Debian:12","purl":"pkg:deb/debian/proftpd-dfsg?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.0-13"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6171.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Debian:13","purl":"pkg:deb/debian/proftpd-dfsg?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.0-13"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6171.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Debian:14","purl":"pkg:deb/debian/proftpd-dfsg?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.0-13"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6171.json"}}],"schema_version":"1.9.0"}