CVE-2021-41805
HashiCorp Consul Enterprise Authentication Bypass
Description
HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.
INFO
Published Date :
Dec. 12, 2021, 5:15 a.m.
Last Modified :
Nov. 21, 2024, 6:26 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Upgrade Consul Enterprise to version 1.8.17, 1.9.11, or 1.10.4 or later.
- If an upgrade is not possible, review and restrict access control list (ACL) token permissions to prevent unauthorized access.
Public PoC/Exploit Available at Github
CVE-2021-41805 has a 2 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-2021-41805.
| URL | Resource |
|---|---|
| https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20211229-0007/ | Third Party Advisory |
| https://www.hashicorp.com/blog/category/consul | Product Vendor Advisory |
| https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20211229-0007/ | Third Party Advisory |
| https://www.hashicorp.com/blog/category/consul | Product Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-41805 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-2021-41805
weaknesses.
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).
A proof-of-concept for CVE-2021-41805 which is a vulnerability in HashiCorp Consul Enterprise allowing for Remote Code Execution (RCE) with escalated privileges.
Python
HashiCorp Consul exploit with python. (CVE-2021-41805)
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-2021-41805 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41805 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 Added Reference https://security.netapp.com/advisory/ntap-20211229-0007/ Added Reference https://www.hashicorp.com/blog/category/consul -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 31, 2022
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20211229-0007/ No Types Assigned https://security.netapp.com/advisory/ntap-20211229-0007/ Third Party Advisory -
CVE Modified by [email protected]
Dec. 29, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20211229-0007/ [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 No Types Assigned https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 Vendor Advisory Changed Reference Type https://www.hashicorp.com/blog/category/consul No Types Assigned https://www.hashicorp.com/blog/category/consul Product, Vendor Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:* versions from (including) 1.7.0 up to (excluding) 1.8.17 *cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:* versions from (including) 1.9.0 up to (excluding) 1.9.11 *cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:* versions from (including) 1.10.0 up to (excluding) 1.10.4
Vulnerability Scoring Details
Base CVSS Score: 8.8
Base CVSS Score: 6.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
6.56 }} -0.24%
score
0.90751
percentile