Back to Database
Status published
High
CVE-2020-36221
An integer underflow was discovered in OpenLDAP before 2.4.57 leading...
Vulnerability Description
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-36221
Credits & Attribution
No credits recorded in the NVD database.
References
- https://bugs.openldap.org/show_bug.cgi?id=9404
- https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31
- https://bugs.openldap.org/show_bug.cgi?id=9424
- https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57
- https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html
- https://www.debian.org/security/2021/dsa-4845
- https://security.netapp.com/advisory/ntap-20210226-0002/
- https://support.apple.com/kb/HT212529
- https://support.apple.com/kb/HT212531
- https://support.apple.com/kb/HT212530
- http://seclists.org/fulldisclosure/2021/May/70
- http://seclists.org/fulldisclosure/2021/May/64
- http://seclists.org/fulldisclosure/2021/May/65
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
More from openldap
View All →CVE-2022-29155
In OpenLDAP 2.x before 2.5.12 and 2.6.x before 2.6.2, a...
Critical
9.8
CVE-2021-27212
In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion...
High
7.5
CVE-2020-36230
A flaw was discovered in OpenLDAP before 2.4.57 leading in...
High
7.5
CVE-2020-36229
A flaw was discovered in ldap_X509dn2bv in OpenLDAP before 2.4.57...
High
7.5
CVE-2020-36228
An integer underflow was discovered in OpenLDAP before 2.4.57 leading...
High
7.5
Affected Vendor
openldap
View all reports →Affected Software
openldap, debian linux, mac os x, macos
Vulnerable Versions:
0, 9.0, 10.0, 10.14.0, 10.14.6, 11.1
Timeline
Official Publish:
January 25th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.