CVE-2022-36103
Talos Linux Kubernetes Cluster Join Token Tokenization and Machine Configuration Access Control Vulnerability
Description
Talos Linux is a Linux distribution built for Kubernetes deployments. Talos worker nodes use a join token to get accepted into the Talos cluster. Due to improper validation of the request while signing a worker node CSR (certificate signing request) Talos control plane node might issue Talos API certificate which allows full access to Talos API on a control plane node. Accessing Talos API with full level access on a control plane node might reveal sensitive information which allows full level access to the cluster (Kubernetes and Talos PKI, etc.). Talos API join token is stored in the machine configuration on the worker node. When configured correctly, Kubernetes workloads don't have access to the machine configuration, but due to a misconfiguration workload might access the machine configuration and reveal the join token. This problem has been fixed in Talos 1.2.2. Enabling the Pod Security Standards mitigates the vulnerability by denying hostPath mounts and host networking by default in the baseline policy. Clusters that don't run untrusted workloads are not affected. Clusters with correct Pod Security configurations which don't allow hostPath mounts, and secure access to cloud metadata server (or machine configuration is not supplied via cloud metadata server) are not affected.
INFO
Published Date :
Sept. 13, 2022, 5:15 p.m.
Last Modified :
Nov. 21, 2024, 7:12 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
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-2022-36103.
| URL | Resource |
|---|---|
| https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f | Patch Third Party Advisory |
| https://github.com/siderolabs/talos/releases/tag/v1.2.2 | Release Notes Third Party Advisory |
| https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq | Mitigation Third Party Advisory |
| https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f | Patch Third Party Advisory |
| https://github.com/siderolabs/talos/releases/tag/v1.2.2 | Release Notes Third Party Advisory |
| https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq | Mitigation 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-2022-36103 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-36103 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f Added Reference https://github.com/siderolabs/talos/releases/tag/v1.2.2 Added Reference https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Jul. 21, 2023
Action Type Old Value New Value Added CWE NIST CWE-863 -
Initial Analysis by [email protected]
Sep. 16, 2022
Action Type Old Value New Value 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://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f No Types Assigned https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f Patch, Third Party Advisory Changed Reference Type https://github.com/siderolabs/talos/releases/tag/v1.2.2 No Types Assigned https://github.com/siderolabs/talos/releases/tag/v1.2.2 Release Notes, Third Party Advisory Changed Reference Type https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq No Types Assigned https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq Mitigation, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:siderolabs:talos_linux:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-36103 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-2022-36103
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.02%
score
0.27180
percentile