CVE-2021-25737
Kubernetes Node Privilege Escalation and Traffic Redirect
Description
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
INFO
Published Date :
Sept. 6, 2021, 12:15 p.m.
Last Modified :
Nov. 21, 2024, 5:55 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.7
Exploitability Score :
1.7
Public PoC/Exploit Available at Github
CVE-2021-25737 has a 7 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-2021-25737.
| URL | Resource |
|---|---|
| https://github.com/kubernetes/kubernetes/issues/102106 | Patch Third Party Advisory |
| https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20211004-0004/ | Third Party Advisory |
| https://github.com/kubernetes/kubernetes/issues/102106 | Patch Third Party Advisory |
| https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20211004-0004/ | 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).
None
None
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⚙ DevSecOps Kubernetes Playground ("A Hacker's Guide to Kubernetes")
Dockerfile Shell Ruby Smarty Jinja HCL
None
awesome resources about cloud native security 🐿
cloud-native container-security cloud-native-security kubernetes-security container-escape k8s kubernetes container docker docker-security serverless serverless-security cloud-security cloud-computing
A curated list for Awesome Kubernetes Security resources
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-25737 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-25737 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://github.com/kubernetes/kubernetes/issues/102106 Added Reference https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY Added Reference https://security.netapp.com/advisory/ntap-20211004-0004/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 07, 2021
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20211004-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20211004-0004/ Third Party Advisory -
CVE Modified by [email protected]
Oct. 04, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20211004-0004/ [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 13, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://github.com/kubernetes/kubernetes/issues/102106 No Types Assigned https://github.com/kubernetes/kubernetes/issues/102106 Patch, Third Party Advisory Changed Reference Type https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY No Types Assigned https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY Mailing List, Third Party Advisory Added CWE NIST CWE-601 Added CPE Configuration OR *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.16.0 up to (excluding) 1.18.19 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.19.0 up to (excluding) 1.19.10 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.20.0 up to (excluding) 1.20.7 *cpe:2.3:a:kubernetes:kubernetes:1.21.0:-:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-25737 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-2021-25737
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.23543
percentile