CVE-2023-45140
The Bastion SSH SCP/SFTP Group-Based JIT MFA Bypass Vulnerability
Description
The Bastion provides authentication, authorization, traceability and auditability for SSH accesses. SCP and SFTP plugins don't honor group-based JIT MFA. Establishing a SCP/SFTP connection through The Bastion via a group access where MFA is enforced does not ask for additional factor. This abnormal behavior only applies to per-group-based JIT MFA. Other MFA setup types, such as Immediate MFA, JIT MFA on a per-plugin basis and JIT MFA on a per-account basis are not affected. This issue has been patched in version 3.14.15.
INFO
Published Date :
Nov. 8, 2023, 4:15 p.m.
Last Modified :
Nov. 16, 2023, 6:50 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.7
Exploitability Score :
1.7
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-2023-45140.
| URL | Resource |
|---|---|
| https://github.com/ovh/the-bastion/releases/tag/v3.14.15 | Patch |
| https://github.com/ovh/the-bastion/security/advisories/GHSA-pr4q-w883-pf5x | Mitigation 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-2023-45140 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-45140 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]
Nov. 16, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Changed Reference Type https://github.com/ovh/the-bastion/releases/tag/v3.14.15 No Types Assigned https://github.com/ovh/the-bastion/releases/tag/v3.14.15 Patch Changed Reference Type https://github.com/ovh/the-bastion/security/advisories/GHSA-pr4q-w883-pf5x No Types Assigned https://github.com/ovh/the-bastion/security/advisories/GHSA-pr4q-w883-pf5x Mitigation, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:ovh:the-bastion:*:*:*:*:*:*:*:* versions up to (excluding) 3.14.15 -
CVE Received by [email protected]
Nov. 08, 2023
Action Type Old Value New Value Added Description The Bastion provides authentication, authorization, traceability and auditability for SSH accesses. SCP and SFTP plugins don't honor group-based JIT MFA. Establishing a SCP/SFTP connection through The Bastion via a group access where MFA is enforced does not ask for additional factor. This abnormal behavior only applies to per-group-based JIT MFA. Other MFA setup types, such as Immediate MFA, JIT MFA on a per-plugin basis and JIT MFA on a per-account basis are not affected. This issue has been patched in version 3.14.15. Added Reference GitHub, Inc. https://github.com/ovh/the-bastion/security/advisories/GHSA-pr4q-w883-pf5x [No types assigned] Added Reference GitHub, Inc. https://github.com/ovh/the-bastion/releases/tag/v3.14.15 [No types assigned] Added CWE GitHub, Inc. CWE-306 Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-45140 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-2023-45140
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.18674
percentile