In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "ldap-utils" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "ldap-utils-dbgsym" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "libldap-2.4-2" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "libldap-2.4-2-dbg" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "libldap-2.4-2-dbgsym" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "libldap2-dev" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "libldap2-dev-dbgsym" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "slapd" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "slapd-dbg" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "slapd-dbgsym" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "slapd-smbk5pwd" }, { "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2", "binary_name": "slapd-smbk5pwd-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "ldap-utils" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "ldap-utils-dbgsym" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "libldap-2.4-2" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "libldap-2.4-2-dbg" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "libldap-2.4-2-dbgsym" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "libldap2-dev" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "libldap2-dev-dbgsym" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "slapd" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "slapd-dbg" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "slapd-dbgsym" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "slapd-smbk5pwd" }, { "binary_version": "2.4.42+dfsg-2ubuntu3.8", "binary_name": "slapd-smbk5pwd-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "ldap-utils" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "ldap-utils-dbgsym" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "libldap-2.4-2" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "libldap-2.4-2-dbgsym" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "libldap-common" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "libldap2-dev" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "slapd" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "slapd-dbgsym" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "slapd-smbk5pwd" }, { "binary_version": "2.4.45+dfsg-1ubuntu1.5", "binary_name": "slapd-smbk5pwd-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "ldap-utils" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "ldap-utils-dbgsym" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "libldap-2.4-2" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "libldap-2.4-2-dbgsym" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "libldap-common" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "libldap2-dev" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapd" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapd-contrib" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapd-contrib-dbgsym" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapd-dbgsym" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapd-smbk5pwd" }, { "binary_version": "2.4.49+dfsg-2ubuntu1.2", "binary_name": "slapi-dev" } ] }