7.5
HIGH
CVE-2020-36221
OpenLDAP Integer Underflow Denial of Service 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).

INFO

Published Date :

Jan. 26, 2021, 6:15 p.m.

Last Modified :

Nov. 7, 2023, 3:22 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-36221 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apple macos
2 Apple mac_os_x
1 Debian debian_linux
1 Openldap openldap
: Total Affected Vendor : 3 | Products : 4
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-36221.

URL Resource
http://seclists.org/fulldisclosure/2021/May/64 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2021/May/65 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2021/May/70 Mailing List Third Party Advisory
https://bugs.openldap.org/show_bug.cgi?id=9404 Issue Tracking Vendor Advisory
https://bugs.openldap.org/show_bug.cgi?id=9424 Issue Tracking Vendor Advisory
https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31 Patch Vendor Advisory
https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842 Patch Vendor Advisory
https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57 Release Notes Vendor Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0002/ Third Party Advisory
https://support.apple.com/kb/HT212529 Third Party Advisory
https://support.apple.com/kb/HT212530 Third Party Advisory
https://support.apple.com/kb/HT212531 Third Party Advisory
https://www.debian.org/security/2021/dsa-4845 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-36221 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-36221 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
    Added Reference MITRE https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
    Removed Reference MITRE https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
    Removed Reference MITRE https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
  • Modified Analysis by [email protected]

    Apr. 13, 2022

    Action Type Old Value New Value
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/64 No Types Assigned http://seclists.org/fulldisclosure/2021/May/64 Mailing List, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/65 No Types Assigned http://seclists.org/fulldisclosure/2021/May/65 Mailing List, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/70 No Types Assigned http://seclists.org/fulldisclosure/2021/May/70 Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212530 No Types Assigned https://support.apple.com/kb/HT212530 Third Party Advisory
  • CVE Modified by [email protected]

    Jun. 29, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 28, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/May/70 [No Types Assigned]
    Added Reference http://seclists.org/fulldisclosure/2021/May/64 [No Types Assigned]
    Added Reference http://seclists.org/fulldisclosure/2021/May/65 [No Types Assigned]
    Added Reference https://support.apple.com/kb/HT212530 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Changed Reference Type https://support.apple.com/kb/HT212529 No Types Assigned https://support.apple.com/kb/HT212529 Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212531 No Types Assigned https://support.apple.com/kb/HT212531 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions from (including) 10.14.0 up to (excluding) 10.14.6 *cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-003:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:* *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.1 up to (excluding) 11.4
  • CVE Modified by [email protected]

    May. 24, 2021

    Action Type Old Value New Value
    Added Reference https://support.apple.com/kb/HT212529 [No Types Assigned]
    Added Reference https://support.apple.com/kb/HT212531 [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210226-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210226-0002/ Third Party Advisory
  • CVE Modified by [email protected]

    Feb. 26, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210226-0002/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Feb. 08, 2021

    Action Type Old Value New Value
    Changed Reference Type https://bugs.openldap.org/show_bug.cgi?id=9404 Vendor Advisory https://bugs.openldap.org/show_bug.cgi?id=9404 Issue Tracking, Vendor Advisory
    Changed Reference Type https://bugs.openldap.org/show_bug.cgi?id=9424 Vendor Advisory https://bugs.openldap.org/show_bug.cgi?id=9424 Issue Tracking, Vendor Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html Mailing List, Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2021/dsa-4845 No Types Assigned https://www.debian.org/security/2021/dsa-4845 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 03, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-4845 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 03, 2021

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugs.openldap.org/show_bug.cgi?id=9404 No Types Assigned https://bugs.openldap.org/show_bug.cgi?id=9404 Vendor Advisory
    Changed Reference Type https://bugs.openldap.org/show_bug.cgi?id=9424 No Types Assigned https://bugs.openldap.org/show_bug.cgi?id=9424 Vendor Advisory
    Changed Reference Type https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31 No Types Assigned https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31 Patch, Vendor Advisory
    Changed Reference Type https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842 No Types Assigned https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842 Patch, Vendor Advisory
    Changed Reference Type https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57 No Types Assigned https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57 Release Notes, Vendor Advisory
    Added CWE NIST CWE-191
    Added CPE Configuration OR *cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.57
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-36221 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-36221 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

4.94 }} -0.79%

score

0.92834

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: