CVE-2023-43652
"JumpServer KoKo API Public Key Authentication Bypass"
Description
JumpServer is an open source bastion host. As an unauthenticated user, it is possible to authenticate to the core API with a username and an SSH public key without needing a password or the corresponding SSH private key. An SSH public key should be considered public knowledge and should not used as an authentication secret alone. JumpServer provides an API for the KoKo component to validate user private key logins. This API does not verify the source of requests and will generate a personal authentication token. Given that public keys can be easily leaked, an attacker can exploit the leaked public key and username to authenticate, subsequently gaining access to the current user's information and authorized actions. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
INFO
Published Date :
Sept. 27, 2023, 7:15 p.m.
Last Modified :
Oct. 2, 2023, 6:37 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
3.9
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-2023-43652.
| URL | Resource |
|---|---|
| https://github.com/jumpserver/jumpserver/security/advisories/GHSA-fr8h-xh5x-r8g9 | Exploit Vendor 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-2023-43652 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-43652 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]
Oct. 02, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://github.com/jumpserver/jumpserver/security/advisories/GHSA-fr8h-xh5x-r8g9 No Types Assigned https://github.com/jumpserver/jumpserver/security/advisories/GHSA-fr8h-xh5x-r8g9 Exploit, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (excluding) 2.28.20 *cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.7.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-43652 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-2023-43652
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.33 }} 0.10%
score
0.71415
percentile