CVE-2021-27212
HIGH
7.5
CVSS Score
Published: February 14, 2021 at 02:53 AM UTC
Updated: October 14, 2026 at 12:17 PM UTC
2 products affected across 2 vendorsDebian LinuxOpenLDAP
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Severity
HIGH7.5
Exploit prediction
EPSS 66%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (9)
x_refsource_MISCExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugs.openldap.org/show_bug.cgi?id=9454x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3EMailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3EMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/02/msg00035.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210319-0005/Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4860CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-617
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