{"id":"CVE-2021-27212","details":"In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.","aliases":["BIT-openldap-2021-27212"],"modified":"2026-04-16T00:02:39.756078274Z","published":"2021-02-14T03:15:12.957Z","related":["SUSE-SU-2021:0692-1","SUSE-SU-2021:0693-1","SUSE-SU-2021:0723-1","SUSE-SU-2021:14700-1","openSUSE-SU-2021:0408-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0"}],"cpe":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"9.0"}],"cpe":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"}]},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210319-0005/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4860"},{"type":"REPORT","url":"https://bugs.openldap.org/show_bug.cgi?id=9454"},{"type":"FIX","url":"https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0"},{"type":"FIX","url":"https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openldap/openldap","events":[{"introduced":"0"},{"last_affected":"3b03d6bea27f29b7f7f91b3d5488fbd6e69b6c29"},{"last_affected":"7e717b033a73e47e7fadeee378e6aae28884e050"},{"last_affected":"4f2d6dd1ff980b7b51b0a8bbcbb08cdaa96826a3"}],"database_specific":{"source":"CPE_FIELD","extracted_events":[{"introduced":"0"},{"last_affected":"2.4.57"},{"last_affected":"2.5.0-alpha"},{"last_affected":"2.5.1-alpha"}],"cpe":["cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*","cpe:2.3:a:openldap:openldap:2.5.0:alpha:*:*:*:*:*:*","cpe:2.3:a:openldap:openldap:2.5.1:alpha:*:*:*:*:*:*"]}}],"versions":["ACLCHECK_0","AUTOCONF_2_57","LDAP_3_3+prerelease","LDBM_POST_GIANT_RWLOCK","LDBM_PRE_GIANT_RWLOCK","LOCKER_IDS","MIGRATION_CVS2GIT","NO_SLAP_OP_BLOCKS","OPENDLAP_REL_ENG_2_2_MP","OPENLDAP_AC_BP","OPENLDAP_REL_ENG_1_0_0","OPENLDAP_REL_ENG_2_1_BP","OPENLDAP_REL_ENG_2_1_MP","OPENLDAP_REL_ENG_2_2_BP","OPENLDAP_REL_ENG_2_2_MP","OPENLDAP_REL_ENG_2_3_BP","OPENLDAP_REL_ENG_2_3_MP","OPENLDAP_REL_ENG_2_4_0ALPHA","OPENLDAP_REL_ENG_2_4_10","OPENLDAP_REL_ENG_2_4_11","OPENLDAP_REL_ENG_2_4_12","OPENLDAP_REL_ENG_2_4_13","OPENLDAP_REL_ENG_2_4_14","OPENLDAP_REL_ENG_2_4_15","OPENLDAP_REL_ENG_2_4_16","OPENLDAP_REL_ENG_2_4_17","OPENLDAP_REL_ENG_2_4_18","OPENLDAP_REL_ENG_2_4_19","OPENLDAP_REL_ENG_2_4_1ALPHA","OPENLDAP_REL_ENG_2_4_20","OPENLDAP_REL_ENG_2_4_21","OPENLDAP_REL_ENG_2_4_22","OPENLDAP_REL_ENG_2_4_23","OPENLDAP_REL_ENG_2_4_24","OPENLDAP_REL_ENG_2_4_25","OPENLDAP_REL_ENG_2_4_26","OPENLDAP_REL_ENG_2_4_27","OPENLDAP_REL_ENG_2_4_28","OPENLDAP_REL_ENG_2_4_29","OPENLDAP_REL_ENG_2_4_2ALPHA","OPENLDAP_REL_ENG_2_4_30","OPENLDAP_REL_ENG_2_4_32","OPENLDAP_REL_ENG_2_4_33","OPENLDAP_REL_ENG_2_4_34","OPENLDAP_REL_ENG_2_4_35","OPENLDAP_REL_ENG_2_4_36","OPENLDAP_REL_ENG_2_4_37","OPENLDAP_REL_ENG_2_4_38","OPENLDAP_REL_ENG_2_4_39","OPENLDAP_REL_ENG_2_4_3ALPHA","OPENLDAP_REL_ENG_2_4_40","OPENLDAP_REL_ENG_2_4_41","OPENLDAP_REL_ENG_2_4_42","OPENLDAP_REL_ENG_2_4_43","OPENLDAP_REL_ENG_2_4_44","OPENLDAP_REL_ENG_2_4_45","OPENLDAP_REL_ENG_2_4_46","OPENLDAP_REL_ENG_2_4_47","OPENLDAP_REL_ENG_2_4_48","OPENLDAP_REL_ENG_2_4_49","OPENLDAP_REL_ENG_2_4_4ALPHA","OPENLDAP_REL_ENG_2_4_50","OPENLDAP_REL_ENG_2_4_51","OPENLDAP_REL_ENG_2_4_52","OPENLDAP_REL_ENG_2_4_53","OPENLDAP_REL_ENG_2_4_54","OPENLDAP_REL_ENG_2_4_55","OPENLDAP_REL_ENG_2_4_56","OPENLDAP_REL_ENG_2_4_57","OPENLDAP_REL_ENG_2_4_5BETA","OPENLDAP_REL_ENG_2_4_6","OPENLDAP_REL_ENG_2_4_7","OPENLDAP_REL_ENG_2_4_8","OPENLDAP_REL_ENG_2_4_9","OPENLDAP_REL_ENG_2_4_BP","OPENLDAP_REL_ENG_2_4_MP","OPENLDAP_REL_ENG_2_5_0ALPHA","OPENLDAP_REL_ENG_2_5_1ALPHA","OPENLDAP_REL_ENG_2_BP","OPENLDAP_REL_ENG_2_MP","OPENLDAP_SLAPD_BACK_LDAP"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-27212.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}