7.5
HIGH
CVE-2023-35921
Siemens SIMATIC MV Ethernet Frame Processing Denial of Service Vulnerability
Description

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted Ethernet frames sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.

INFO

Published Date :

July 11, 2023, 10:15 a.m.

Last Modified :

July 19, 2023, 3:21 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-35921 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.

ID Vendor Product Action
1 Siemens simatic_mv540_h_firmware
2 Siemens simatic_mv540_s_firmware
3 Siemens simatic_mv550_h_firmware
4 Siemens simatic_mv550_s_firmware
5 Siemens simatic_mv560_u_firmware
6 Siemens simatic_mv560_x_firmware
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-2023-35921.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf 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-2023-35921 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-35921 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]

    Jul. 19, 2023

    Action Type Old Value New Value
    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-561322.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv540_h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv540_h:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv540_s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv540_s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv550_h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv550_h:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv550_s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv550_s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv560_u_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv560_u:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_mv560_x_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.4 OR cpe:2.3:h:siemens:simatic_mv560_x:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-35921 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-2023-35921 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.15 }} 0.07%

score

0.52059

percentile

CVSS31 - Vulnerability Scoring System
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