{"id":"DEBIAN-CVE-2009-4565","details":"sendmail before 8.14.4 does not properly handle a '\\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","modified":"2026-09-11T06:47:28.549711244Z","published":"2010-01-04T21:30:00.640Z","upstream":["CVE-2009-4565"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2009-4565"}],"affected":[{"package":{"name":"sendmail","ecosystem":"Debian:12","purl":"pkg:deb/debian/sendmail?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.3-9.1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-4565.json"}},{"package":{"name":"sendmail","ecosystem":"Debian:13","purl":"pkg:deb/debian/sendmail?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.3-9.1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-4565.json"}},{"package":{"name":"sendmail","ecosystem":"Debian:14","purl":"pkg:deb/debian/sendmail?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.3-9.1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-4565.json"}}],"schema_version":"1.9.0"}