CVE-2023-43809
Soft Serve SSH Public Key Bypass Remote Authentication Vulnerability
Description
Soft Serve is a self-hostable Git server for the command line. Prior to version 0.6.2, a security vulnerability in Soft Serve could allow an unauthenticated, remote attacker to bypass public key authentication when keyboard-interactive SSH authentication is active, through the `allow-keyless` setting, and the public key requires additional client-side verification for example using FIDO2 or GPG. This is due to insufficient validation procedures of the public key step during SSH request handshake, granting unauthorized access if the keyboard-interaction mode is utilized. An attacker could exploit this vulnerability by presenting manipulated SSH requests using keyboard-interactive authentication mode. This could potentially result in unauthorized access to the Soft Serve. Users should upgrade to the latest Soft Serve version `v0.6.2` to receive the patch for this issue. To workaround this vulnerability without upgrading, users can temporarily disable Keyboard-Interactive SSH Authentication using the `allow-keyless` setting.
INFO
Published Date :
Oct. 4, 2023, 9:15 p.m.
Last Modified :
Oct. 10, 2023, 8:12 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
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-2023-43809.
| URL | Resource |
|---|---|
| https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89 | Patch |
| https://github.com/charmbracelet/soft-serve/issues/389 | Exploit Issue Tracking |
| https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2 | Release Notes |
| https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-mc97-99j4-vm2v | 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-2023-43809 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-43809 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 10, 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:N/A:N Changed Reference Type https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89 No Types Assigned https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89 Patch Changed Reference Type https://github.com/charmbracelet/soft-serve/issues/389 No Types Assigned https://github.com/charmbracelet/soft-serve/issues/389 Exploit, Issue Tracking Changed Reference Type https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2 No Types Assigned https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2 Release Notes Changed Reference Type https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-mc97-99j4-vm2v No Types Assigned https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-mc97-99j4-vm2v Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:charm:soft_serve:*:*:*:*:*:go:*:* versions up to (excluding) 0.6.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-43809 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-2023-43809
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} 0.02%
score
0.58002
percentile