CVE-2021-46823
Python-LDAP Regex Denial of Service (ReDoS) Vulnerability
Description
python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
INFO
Published Date :
June 18, 2022, 4:15 p.m.
Last Modified :
Aug. 8, 2023, 2:22 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2021-46823.
| URL | Resource |
|---|---|
| https://exchange.xforce.ibmcloud.com/vulnerabilities/221507 | Third Party Advisory VDB Entry |
| https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm | 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-2021-46823 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46823 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 -
Initial Analysis by [email protected]
Jun. 28, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://exchange.xforce.ibmcloud.com/vulnerabilities/221507 No Types Assigned https://exchange.xforce.ibmcloud.com/vulnerabilities/221507 Third Party Advisory, VDB Entry Changed Reference Type https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm No Types Assigned https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm Third Party Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:a:python-ldap:python-ldap:*:*:*:*:*:*:*:* versions up to (excluding) 3.4.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-46823 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-2021-46823
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.02%
score
0.49948
percentile