CVE-2021-25676
Siemens Ruggedcom and Scalance Devices SSH Authentication Bypass Denial of Service
Description
A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.
INFO
Published Date :
March 15, 2021, 5:15 p.m.
Last Modified :
April 20, 2021, 5:41 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-25676
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-25676.
| URL | Resource |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf | Vendor Advisory |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02 | Third Party Advisory US Government Resource |
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-2021-25676 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-25676 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 -
Modified Analysis by [email protected]
Apr. 20, 2021
Action Type Old Value New Value Changed Reference Type https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02 No Types Assigned https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02 Third Party Advisory, US Government Resource -
CVE Modified by [email protected]
Apr. 15, 2021
Action Type Old Value New Value Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02 [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 18, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf Vendor Advisory Added CPE Configuration AND OR *cpe:2.3:o:siemens:ruggedcom_rm1224_firmware:6.3:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:ruggedcom_rm1224:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_m-800_firmware:6.3:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_m-800:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_s615_firmware:6.3:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_s615:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_sc-600_firmware:*:*:*:*:*:*:*:* versions from (including) 2.1 up to (excluding) 2.1.3 OR cpe:2.3:h:siemens:scalance_sc-600:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-25676 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-2021-25676
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} 0.01%
score
0.44370
percentile