CVE-2021-27212
OpenLDAP LDAP Denial of Service Vulnerability
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.
INFO
Published Date :
Feb. 14, 2021, 3:15 a.m.
Last Modified :
Nov. 7, 2023, 3:31 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-27212 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-27212.
| URL | Resource |
|---|---|
| https://bugs.openldap.org/show_bug.cgi?id=9454 | Exploit Issue Tracking Vendor Advisory |
| https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0 | Patch Vendor Advisory |
| https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30 | Patch 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/msg00035.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210319-0005/ | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4860 | 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).
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27212 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27212 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]
Sep. 13, 2021
Action Type Old Value New Value 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 -
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] -
Modified Analysis by [email protected]
Mar. 26, 2021
Action Type Old Value New Value Changed Reference Type https://bugs.openldap.org/show_bug.cgi?id=9454 Exploit, Vendor Advisory https://bugs.openldap.org/show_bug.cgi?id=9454 Exploit, Issue Tracking, Vendor Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210319-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20210319-0005/ Third Party Advisory -
CVE Modified by [email protected]
Mar. 19, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210319-0005/ [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 22, 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=9454 No Types Assigned https://bugs.openldap.org/show_bug.cgi?id=9454 Exploit, Vendor Advisory Changed Reference Type https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0 No Types Assigned https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0 Patch, Vendor Advisory Changed Reference Type https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30 No Types Assigned https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30 Patch, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4860 No Types Assigned https://www.debian.org/security/2021/dsa-4860 Third Party Advisory Added CWE NIST CWE-617 Added CPE Configuration OR *cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* versions up to (including) 2.4.57 *cpe:2.3:a:openldap:openldap:2.5.0:alpha:*:*:*:*:*:* *cpe:2.3:a:openldap:openldap:2.5.1:alpha:*:*:*:*:*:* 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. 22, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4860 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 20, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27212 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-2021-27212
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
24.32 }} 5.58%
score
0.96500
percentile