High severity7.5NVD Advisory· Published Feb 14, 2021· Updated Jun 17, 2026
CVE-2021-27212
CVE-2021-27212
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
42- osv-coords41 versionspkg:bitnami/openldappkg:rpm/opensuse/openldap2&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/openldap2-client&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/openldap2-client&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/openldap2-client-openssl1&distro=SUSE%20Linux%20Enterprise%20Server%2011-SECURITYpkg:rpm/suse/openldap2&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/openldap2&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2012pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP2pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/openldap2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/openldap2&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/openldap2&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/openldap2&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/openldap2&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/openldap2&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/openldap2&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openldap2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/openldap2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 2.4.58+ 40 more
- (no CPE)range: < 2.4.58
- (no CPE)range: < 2.4.46-lp152.14.18.1
- (no CPE)range: < 2.4.26-0.74.26.1
- (no CPE)range: < 2.4.26-0.74.26.1
- (no CPE)range: < 2.4.26-0.74.26.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.41-39.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.26-0.74.26.1
- (no CPE)range: < 2.4.26-0.74.26.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.41-39.1
- (no CPE)range: < 2.4.41-39.1
- (no CPE)range: < 2.4.41-39.1
- (no CPE)range: < 2.4.41-39.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.46-9.48.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
- (no CPE)range: < 2.4.41-18.83.1
Patches
Vulnerability mechanics
References
8- git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0nvdPatchVendor Advisory
- git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30nvdPatchVendor Advisory
- bugs.openldap.org/show_bug.cginvdExploitIssue TrackingVendor Advisory
- lists.debian.org/debian-lts-announce/2021/02/msg00035.htmlnvdMailing ListThird Party Advisory
- security.netapp.com/advisory/ntap-20210319-0005/nvdThird Party Advisory
- www.debian.org/security/2021/dsa-4860nvdThird Party Advisory
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Envd
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Envd
News mentions
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