8.6
HIGH
CVE-2023-36521
Siemens SIMATIC MV Series 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). The result synchronization server of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of all socket-based communication of the affected products if the result server is enabled.

INFO

Published Date :

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

Last Modified :

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

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-36521 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
: Total Affected Vendor : 1 | Products : 6
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-2023-36521.

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-2023-36521 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-36521 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 CWE-770
    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-2023-36521 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-2023-36521 weaknesses.

CAPEC-125: Flooding Flooding CAPEC-130: Excessive Allocation Excessive Allocation CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-197: Exponential Data Expansion Exponential Data Expansion CAPEC-229: Serialized Data Parameter Blowup Serialized Data Parameter Blowup CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-469: HTTP DoS HTTP DoS CAPEC-482: TCP Flood TCP Flood CAPEC-486: UDP Flood UDP Flood CAPEC-487: ICMP Flood ICMP Flood CAPEC-488: HTTP Flood HTTP Flood CAPEC-489: SSL Flood SSL Flood CAPEC-490: Amplification Amplification CAPEC-491: Quadratic Data Expansion Quadratic Data Expansion CAPEC-493: SOAP Array Blowup SOAP Array Blowup CAPEC-494: TCP Fragmentation TCP Fragmentation CAPEC-495: UDP Fragmentation UDP Fragmentation CAPEC-496: ICMP Fragmentation ICMP Fragmentation CAPEC-528: XML Flood XML Flood
Exploit Prediction

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

0.08 }} 0.03%

score

0.34270

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
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