servers/slapd/back-mdb/search.c in OpenLDAP through 2.4.44 is prone to a double free vulnerability. A user with access to search the directory can crash slapd by issuing a search including the Paged Results control with a page size of 0.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libldap-2.4-2-dbg": "2.4.31-1+nmu2ubuntu8.4", "libldap2-dev-dbgsym": "2.4.31-1+nmu2ubuntu8.4", "slapd-dbg": "2.4.31-1+nmu2ubuntu8.4", "ldap-utils-dbgsym": "2.4.31-1+nmu2ubuntu8.4", "libldap-2.4-2-dbgsym": "2.4.31-1+nmu2ubuntu8.4", "libldap2-dev": "2.4.31-1+nmu2ubuntu8.4", "libldap-2.4-2": "2.4.31-1+nmu2ubuntu8.4", "slapd-smbk5pwd-dbgsym": "2.4.31-1+nmu2ubuntu8.4", "slapd-dbgsym": "2.4.31-1+nmu2ubuntu8.4", "slapd": "2.4.31-1+nmu2ubuntu8.4", "slapd-smbk5pwd": "2.4.31-1+nmu2ubuntu8.4", "ldap-utils": "2.4.31-1+nmu2ubuntu8.4" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libldap-2.4-2-dbg": "2.4.42+dfsg-2ubuntu3.2", "libldap2-dev-dbgsym": "2.4.42+dfsg-2ubuntu3.2", "slapd-dbg": "2.4.42+dfsg-2ubuntu3.2", "ldap-utils-dbgsym": "2.4.42+dfsg-2ubuntu3.2", "libldap-2.4-2-dbgsym": "2.4.42+dfsg-2ubuntu3.2", "libldap2-dev": "2.4.42+dfsg-2ubuntu3.2", "libldap-2.4-2": "2.4.42+dfsg-2ubuntu3.2", "slapd-smbk5pwd-dbgsym": "2.4.42+dfsg-2ubuntu3.2", "slapd-dbgsym": "2.4.42+dfsg-2ubuntu3.2", "slapd": "2.4.42+dfsg-2ubuntu3.2", "slapd-smbk5pwd": "2.4.42+dfsg-2ubuntu3.2", "ldap-utils": "2.4.42+dfsg-2ubuntu3.2" } ] }