{"id":"DEBIAN-CVE-2011-4079","details":"Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.","modified":"2026-04-28T20:07:14.111317Z","published":"2011-10-27T20:55:01.823Z","upstream":["CVE-2011-4079"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2011-4079"}],"affected":[{"package":{"name":"openldap","ecosystem":"Debian:11","purl":"pkg:deb/debian/openldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.28-1"}]}],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4079.json"}},{"package":{"name":"openldap","ecosystem":"Debian:12","purl":"pkg:deb/debian/openldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.28-1"}]}],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4079.json"}},{"package":{"name":"openldap","ecosystem":"Debian:13","purl":"pkg:deb/debian/openldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.28-1"}]}],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4079.json"}},{"package":{"name":"openldap","ecosystem":"Debian:14","purl":"pkg:deb/debian/openldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.28-1"}]}],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4079.json"}}],"schema_version":"1.7.5"}