{"id":"CVE-2020-25692","aliases":["ALPINE-CVE-2020-25692","BIT-openldap-2020-25692","CLSA-2025-1758636652","CLSA-2025-1758645818","CLSA-2026-1777310722","CLSA-2026-1777393215","DEBIAN-CVE-2020-25692","DLA-2425-1","DSA-4782-1","EUVD-2020-18353","GHSA-73cr-r2gx-wgq6","JLSEC-2026-160","MGASA-2020-0407","RHSA-2021:1389","SUSE-SU-2020:14541-1","SUSE-SU-2020:3313-1","SUSE-SU-2020:3314-1","SUSE-SU-2020:3315-1","UBUNTU-CVE-2020-25692","USN-4622-1","USN-4622-2","openSUSE-SU-2020:1918-1","openSUSE-SU-2020:1920-1"],"status":"published","title":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during...","description":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. 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Service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0315,"percentile":0.88046,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2020-10-30T00:00:00Z","modified":"2026-11-02T02:46:05Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"openldap","fixed_in":["2.4.48-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"openldap","fixed_in":["2.4.48-r3"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"openldap","fixed_in":["2.4.50-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"openldap","fixed_in":["2.4.48-r2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"openldap","fixed_in":["2.4.55"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"openldap","fixed_in":["2.4.55+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openldap","fixed_in":["2.4.55+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openldap","fixed_in":["2.4.55+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"openldap","fixed_in":["2.4.44+dfsg-5+deb9u5"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"openldap","fixed_in":["2.4.47+dfsg-3+deb10u3"],"sources":["osv"]},{"ecosystem":"Julia","package":"OpenLDAPClient_jll","fixed_in":["2.5.14+0"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"openldap","fixed_in":["2.4.50-1.2.mga7"],"sources":["osv"]},{"ecosystem":"Red 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An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.","status":"published","published":"2020-12-08T01:15:12.133Z","modified":"2026-11-02T02:46:05.54944482Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:15.879068Z"},{"id":"DEBIAN-CVE-2020-25692","description":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.","status":"published","published":"2020-12-08T01:15:12.133Z","modified":"2026-10-26T12:02:40.70243831Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"JLSEC-2026-160","description":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.","status":"published","published":"2026-04-21T00:04:14.628Z","modified":"2026-07-18T00:01:35.273403812Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:47:18.159338Z"},{"id":"RHSA-2021:1389","title":"Red Hat Security Advisory: openldap security update","status":"published","published":"2024-09-16T05:33:14Z","modified":"2026-08-05T10:08:46Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.071325Z"},{"id":"UBUNTU-CVE-2020-25692","description":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.","status":"published","published":"2020-10-30T00:00:00Z","modified":"2026-04-22T12:35:09.5724Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"BIT-openldap-2020-25692","description":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.","status":"published","published":"2024-03-06T11:02:23.5Z","modified":"2026-09-08T08:45:15.578119565Z","updated_at":"2026-11-02T15:28:34.343258Z"},{"id":"CLSA-2025-1758636652","title":"openldap: Fix of 14 CVEs","description":"- Rebase to 2.4.58 to fix the following vulnerabilities:\n- CVE-2020-12243: fix denial of service caused by LDAP search filters with nested\n  boolean expressions\n- CVE-2020-36221: fix integer underflow in the Certificate Exact Assertion processing\n- CVE-2020-36223: fix slapd crash in the Values Return Filter control handling\n- CVE-2020-36226: fix slapd crash in the saslAuthzTo processing\n- CVE-2020-36228: fix slapd crash in the Certificate List Exact Assertion processing\n- CVE-2020-36225: fix double free and slapd crash in the saslAuthzTo processing\n- CVE-2020-36227: fix infinite loop in slapd with the cancel_extop Cancel operation\n- CVE-2020-36230: fix assertion failure in slapd in the X.509 DN parsing in decode.c\n- CVE-2020-25692: fix NULL pointer dereference during a request for renaming RDNs\n- CVE-2020-25709: fix assertion failure caused by processing malicious packet\n- CVE-2020-36224: fix invalid pointer free and slapd crash in the saslAuthzTo\n  processing\n- CVE-2020-36229: fix slapd crash in the X.509 DN parsing in ad_keystring\n- CVE-2020-25710: fix failed assertion in csnNormalize23()\n- CVE-2020-36222: fix assertion failure in slapd in the saslAuthzTo validation","status":"published","published":"2026-04-22T09:20:05Z","modified":"2026-10-21T10:48:17.543026662Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1758645818","title":"openldap: Fix of 14 CVEs","description":"- Rebase to 2.4.58 to fix the following vulnerabilities:\n- CVE-2020-12243: fix denial of service caused by LDAP search filters with nested\n  boolean expressions\n- CVE-2020-36221: fix integer underflow in the Certificate Exact Assertion processing\n- CVE-2020-36223: fix slapd crash in the Values Return Filter control handling\n- CVE-2020-36226: fix slapd crash in the saslAuthzTo processing\n- CVE-2020-36228: fix slapd crash in the Certificate List Exact Assertion processing\n- CVE-2020-36225: fix double free and slapd crash in the saslAuthzTo processing\n- CVE-2020-36227: fix infinite loop in slapd with the cancel_extop Cancel operation\n- CVE-2020-36230: fix assertion failure in slapd in the X.509 DN parsing in decode.c\n- CVE-2020-25692: fix NULL pointer dereference during a request for renaming RDNs\n- CVE-2020-25709: fix assertion failure caused by processing malicious packet\n- CVE-2020-36224: fix invalid pointer free and slapd crash in the saslAuthzTo\n  processing\n- CVE-2020-36229: fix slapd crash in the X.509 DN parsing in ad_keystring\n- CVE-2020-25710: fix failed assertion in csnNormalize23()\n- CVE-2020-36222: fix assertion failure in slapd in the saslAuthzTo validation","status":"published","published":"2026-04-23T20:31:57Z","modified":"2026-10-21T10:47:48.199517577Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2026-1777310722","title":"openldap: Fix of 15 CVEs","description":"- CVE-2019-13565: SASL session encryption SSF not reset on new connection, allowing downgrade\n- CVE-2020-12243: slapd crash via deeply nested LDAP search filter boolean expressions\n- CVE-2020-25692: NULL pointer dereference in slapd during modRDN request\n- CVE-2020-25709: slapd assertion failure via crafted certificate list validation\n- CVE-2020-25710: slapd assertion failure in obsolete csnNormalize23\n- CVE-2020-36221: slapd integer underflow crash in Certificate Exact Assertion processing\n- CVE-2020-36222: slapd assertion failure in saslAuthzTo validation\n- CVE-2020-36223: slapd double free crash in Values Return Filter control handling\n- CVE-2020-36224: slapd invalid pointer free and crash in saslAuthzTo processing\n- CVE-2020-36225: slapd double free crash in saslAuthzTo processing\n- CVE-2020-36226: slapd memch-\u003ebv_len miscalculation and crash in saslAuthzTo processing\n- CVE-2020-36227: slapd infinite loop via cancel_extop Cancel operation\n- CVE-2020-36228: slapd integer underflow crash in Certificate List Exact Assertion processing\n- CVE-2020-36229: slapd crash in X.509 DN parsing ad_keystring via ldap_X509dn2bv\n- CVE-2020-36230: slapd assertion failure in X.509 DN parsing ber_next_element in decode.c","status":"published","published":"2026-04-27T17:25:27Z","modified":"2026-06-01T00:33:23.608317789Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1777393215","title":"openldap: Fix of 15 CVEs","description":"- CVE-2019-13565: SASL session encryption SSF not reset on new connection, allowing downgrade\n- CVE-2020-12243: slapd crash via deeply nested LDAP search filter boolean expressions\n- CVE-2020-25692: NULL pointer dereference in slapd during modRDN request\n- CVE-2020-25709: slapd assertion failure via crafted certificate list validation\n- CVE-2020-25710: slapd assertion failure in obsolete csnNormalize23\n- CVE-2020-36221: slapd integer underflow crash in Certificate Exact Assertion processing\n- CVE-2020-36222: slapd assertion failure in saslAuthzTo validation\n- CVE-2020-36223: slapd double free crash in Values Return Filter control handling\n- CVE-2020-36224: slapd invalid pointer free and crash in saslAuthzTo processing\n- CVE-2020-36225: slapd double free crash in saslAuthzTo processing\n- CVE-2020-36226: slapd memch-\u003ebv_len miscalculation and crash in saslAuthzTo processing\n- CVE-2020-36227: slapd infinite loop via cancel_extop Cancel operation\n- CVE-2020-36228: slapd integer underflow crash in Certificate List Exact Assertion processing\n- CVE-2020-36229: slapd crash in X.509 DN parsing ad_keystring via ldap_X509dn2bv\n- CVE-2020-36230: slapd assertion failure in X.509 DN parsing ber_next_element in decode.c","status":"published","published":"2026-04-28T16:20:21Z","modified":"2026-06-01T00:33:12.568365854Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"DLA-2425-1","title":"openldap - security update","status":"published","published":"2020-11-01T00:00:00Z","modified":"2026-03-09T01:22:29.704155Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"DSA-4782-1","title":"openldap - security update","status":"published","published":"2020-10-30T00:00:00Z","modified":"2026-03-09T02:09:40.722885Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0407","title":"Updated openldap packages fix a security vulnerability","description":"A vulnerability in the handling of normalization with modrdn was discovered in\nOpenLDAP. An unauthenticated remote attacker can use this flaw to cause a\ndenial of service (slapd daemon crash) via a specially crafted packet\n(CVE-2020-25692).\n\nAlso, the PID file path in the systemd service was fixed to use /run as the$\nparent, rather than /var/run, eliminating warning messages in the logs.\n","status":"published","published":"2020-11-10T15:20:00Z","modified":"2026-04-16T04:42:17.121708975Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2020:1918-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2020-11-14T15:52:48Z","modified":"2026-02-04T04:03:47.29607Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2020:1920-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2020-11-14T17:13:25Z","modified":"2026-02-04T02:37:04.764833Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"SUSE-SU-2020:14541-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n","status":"published","published":"2020-11-11T11:28:44Z","modified":"2026-02-04T04:02:41.492362Z","updated_at":"2026-11-02T15:53:47.634847Z"},{"id":"SUSE-SU-2020:3313-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n","status":"published","published":"2020-11-12T15:08:24Z","modified":"2026-02-04T04:10:08.157708Z","updated_at":"2026-11-02T15:53:48.11786Z"},{"id":"SUSE-SU-2020:3314-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n","status":"published","published":"2020-11-12T15:11:27Z","modified":"2026-02-04T02:27:58.876557Z","updated_at":"2026-11-02T15:53:48.11786Z"},{"id":"SUSE-SU-2020:3315-1","title":"Security update for openldap2","description":"This update for openldap2 fixes the following issues:\n\n- CVE-2020-25692: Fixed an unauthenticated remote denial of service due to incorrect validation of modrdn equality rules (bsc#1178387).\n","status":"published","published":"2020-11-12T15:12:29Z","modified":"2026-02-04T02:13:30.973987Z","updated_at":"2026-11-02T15:53:48.11786Z"},{"id":"USN-4622-1","title":"openldap vulnerability","description":"It was discovered that OpenLDAP incorrectly handled certain network\npackets. A remote attacker could use this issue to cause OpenLDAP to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n","status":"published","published":"2020-11-09T11:49:38Z","modified":"2026-04-22T10:09:13.948621Z","updated_at":"2026-11-02T16:58:15.159055Z"},{"id":"USN-4622-2","title":"openldap vulnerability","description":"USN-4622-1 fixed a vulnerability in OpenLDAP. This update provides\nthe corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that OpenLDAP incorrectly handled certain network\n packets. A remote attacker could use this issue to cause OpenLDAP to crash,\n resulting in a denial of service, or possibly execute arbitrary code.\n","status":"published","published":"2020-11-11T18:01:48Z","modified":"2026-04-22T10:09:31.920894Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}