{"id":"CVE-2017-17740","details":"contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation.","modified":"2026-04-01T23:56:47.720078Z","published":"2017-12-18T06:29:00.397Z","related":["MGASA-2020-0200","SUSE-SU-2018:4150-1","SUSE-SU-2019:0931-1","SUSE-SU-2019:2395-1","openSUSE-SU-2019:2157-1","openSUSE-SU-2019:2176-1","openSUSE-SU-2024:11121-1"],"references":[{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.html"},{"type":"ADVISORY","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10365"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html"},{"type":"REPORT","url":"http://www.openldap.org/its/index.cgi/Incoming?id=8759"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openldap/openldap","events":[{"introduced":"0"},{"last_affected":"40421915e08ed1a10b5703973116705a94190ab0"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.4.45"}]}}],"versions":["ACLCHECK_0","AUTOCONF_2_57","FreeBSD_3_3","GTK_TOOL_0_0","LDAP_3_3+prerelease","LDBM_POST_GIANT_RWLOCK","LDBM_PRE_GIANT_RWLOCK","LMDB_0.9.15","LMDB_0.9.16","LMDB_0.9.17","LMDB_0.9.18","LMDB_0.9.19","LMDB_0.9.20","LMDB_0.9.21","LMDB_0.9.22","LMDB_0.9.23","LMDB_0.9.24","LMDB_0.9.25","LMDB_0.9.26","LMDB_0.9.27","LMDB_0.9.28","LMDB_0.9.29","LMDB_0.9.30","LMDB_0.9.31","LMDB_0.9.32","LMDB_0.9.33","LMDB_0.9.34","LMDB_0.9.35","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_1_0_1","OPENLDAP_REL_ENG_1_0_2","OPENLDAP_REL_ENG_1_0_3","OPENLDAP_REL_ENG_1_1_0","OPENLDAP_REL_ENG_1_1_1","OPENLDAP_REL_ENG_1_1_2","OPENLDAP_REL_ENG_1_1_3","OPENLDAP_REL_ENG_1_1_4","OPENLDAP_REL_ENG_1_1_ALPHA","OPENLDAP_REL_ENG_1_1_ALPHA2","OPENLDAP_REL_ENG_1_1_ALPHA3","OPENLDAP_REL_ENG_1_1_BETA","OPENLDAP_REL_ENG_1_2_0","OPENLDAP_REL_ENG_1_2_1","OPENLDAP_REL_ENG_1_2_10","OPENLDAP_REL_ENG_1_2_11","OPENLDAP_REL_ENG_1_2_12","OPENLDAP_REL_ENG_1_2_13","OPENLDAP_REL_ENG_1_2_2","OPENLDAP_REL_ENG_1_2_3","OPENLDAP_REL_ENG_1_2_4","OPENLDAP_REL_ENG_1_2_5","OPENLDAP_REL_ENG_1_2_6","OPENLDAP_REL_ENG_1_2_7","OPENLDAP_REL_ENG_1_2_8","OPENLDAP_REL_ENG_1_2_9","OPENLDAP_REL_ENG_1_2_BETA","OPENLDAP_REL_ENG_1_2_BETA2","OPENLDAP_REL_ENG_2_0_0","OPENLDAP_REL_ENG_2_0_1","OPENLDAP_REL_ENG_2_0_10","OPENLDAP_REL_ENG_2_0_11","OPENLDAP_REL_ENG_2_0_12","OPENLDAP_REL_ENG_2_0_13","OPENLDAP_REL_ENG_2_0_14","OPENLDAP_REL_ENG_2_0_15","OPENLDAP_REL_ENG_2_0_16","OPENLDAP_REL_ENG_2_0_17","OPENLDAP_REL_ENG_2_0_18","OPENLDAP_REL_ENG_2_0_19","OPENLDAP_REL_ENG_2_0_2","OPENLDAP_REL_ENG_2_0_20","OPENLDAP_REL_ENG_2_0_21","OPENLDAP_REL_ENG_2_0_22","OPENLDAP_REL_ENG_2_0_23","OPENLDAP_REL_ENG_2_0_24","OPENLDAP_REL_ENG_2_0_25","OPENLDAP_REL_ENG_2_0_26","OPENLDAP_REL_ENG_2_0_27","OPENLDAP_REL_ENG_2_0_3","OPENLDAP_REL_ENG_2_0_4","OPENLDAP_REL_ENG_2_0_5","OPENLDAP_REL_ENG_2_0_6","OPENLDAP_REL_ENG_2_0_7","OPENLDAP_REL_ENG_2_0_8","OPENLDAP_REL_ENG_2_0_9","OPENLDAP_REL_ENG_2_0_ALPHA","OPENLDAP_REL_ENG_2_0_ALPHA2","OPENLDAP_REL_ENG_2_0_ALPHA3","OPENLDAP_REL_ENG_2_0_ALPHA4","OPENLDAP_REL_ENG_2_0_BETA","OPENLDAP_REL_ENG_2_0_GAMMA","OPENLDAP_REL_ENG_2_1_10","OPENLDAP_REL_ENG_2_1_11","OPENLDAP_REL_ENG_2_1_12","OPENLDAP_REL_ENG_2_1_13","OPENLDAP_REL_ENG_2_1_14","OPENLDAP_REL_ENG_2_1_15","OPENLDAP_REL_ENG_2_1_16","OPENLDAP_REL_ENG_2_1_17","OPENLDAP_REL_ENG_2_1_18","OPENLDAP_REL_ENG_2_1_19","OPENLDAP_REL_ENG_2_1_2","OPENLDAP_REL_ENG_2_1_20","OPENLDAP_REL_ENG_2_1_21","OPENLDAP_REL_ENG_2_1_22","OPENLDAP_REL_ENG_2_1_23","OPENLDAP_REL_ENG_2_1_24","OPENLDAP_REL_ENG_2_1_25","OPENLDAP_REL_ENG_2_1_26","OPENLDAP_REL_ENG_2_1_27","OPENLDAP_REL_ENG_2_1_28","OPENLDAP_REL_ENG_2_1_29","OPENLDAP_REL_ENG_2_1_3","OPENLDAP_REL_ENG_2_1_30","OPENLDAP_REL_ENG_2_1_4","OPENLDAP_REL_ENG_2_1_5","OPENLDAP_REL_ENG_2_1_6","OPENLDAP_REL_ENG_2_1_7","OPENLDAP_REL_ENG_2_1_8","OPENLDAP_REL_ENG_2_1_9","OPENLDAP_REL_ENG_2_1_ALPHA0","OPENLDAP_REL_ENG_2_1_BETA1","OPENLDAP_REL_ENG_2_1_BP","OPENLDAP_REL_ENG_2_1_MP","OPENLDAP_REL_ENG_2_2_0ALPHA","OPENLDAP_REL_ENG_2_2_10","OPENLDAP_REL_ENG_2_2_11","OPENLDAP_REL_ENG_2_2_12","OPENLDAP_REL_ENG_2_2_13","OPENLDAP_REL_ENG_2_2_14","OPENLDAP_REL_ENG_2_2_15","OPENLDAP_REL_ENG_2_2_16","OPENLDAP_REL_ENG_2_2_17","OPENLDAP_REL_ENG_2_2_18","OPENLDAP_REL_ENG_2_2_19","OPENLDAP_REL_ENG_2_2_1BETA","OPENLDAP_REL_ENG_2_2_20","OPENLDAP_REL_ENG_2_2_21","OPENLDAP_REL_ENG_2_2_22","OPENLDAP_REL_ENG_2_2_23","OPENLDAP_REL_ENG_2_2_24","OPENLDAP_REL_ENG_2_2_25","OPENLDAP_REL_ENG_2_2_26","OPENLDAP_REL_ENG_2_2_27","OPENLDAP_REL_ENG_2_2_28","OPENLDAP_REL_ENG_2_2_29","OPENLDAP_REL_ENG_2_2_2BETA","OPENLDAP_REL_ENG_2_2_30","OPENLDAP_REL_ENG_2_2_3BETA","OPENLDAP_REL_ENG_2_2_4","OPENLDAP_REL_ENG_2_2_5","OPENLDAP_REL_ENG_2_2_6","OPENLDAP_REL_ENG_2_2_7","OPENLDAP_REL_ENG_2_2_8","OPENLDAP_REL_ENG_2_2_9","OPENLDAP_REL_ENG_2_2_BP","OPENLDAP_REL_ENG_2_2_MP","OPENLDAP_REL_ENG_2_3_0ALPHA","OPENLDAP_REL_ENG_2_3_10","OPENLDAP_REL_ENG_2_3_11","OPENLDAP_REL_ENG_2_3_12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