5.3
MEDIUM
CVE-2020-7549
Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium Denial of HTTP and FTP Services DoS Web Server Vulnerability
Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.

INFO

Published Date :

Dec. 11, 2020, 1:15 a.m.

Last Modified :

April 10, 2024, 12:28 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-7549 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 Schneider-electric bmxnoe0100_firmware
2 Schneider-electric bmxnoe0110_firmware
3 Schneider-electric 140noe77111_firmware
4 Schneider-electric 140cpu65150_firmware
5 Schneider-electric 140noc78000_firmware
6 Schneider-electric 140noc78100_firmware
7 Schneider-electric tsxp574634_firmware
8 Schneider-electric tsxp575634_firmware
9 Schneider-electric tsxp576634_firmware
10 Schneider-electric tsxety4103_firmware
11 Schneider-electric tsxety5103_firmware
12 Schneider-electric bmxnoc0401_firmware
13 Schneider-electric modicon_m340_bmxp341000_firmware
14 Schneider-electric modicon_m340_bmxp342020_firmware
15 Schneider-electric modicon_m340_bmxp342000_firmware
16 Schneider-electric modicon_m340_bmxp3420102_firmware
17 Schneider-electric modicon_m340_bmxp3420302_firmware
18 Schneider-electric modicon_m340_bmxp341000
19 Schneider-electric modicon_m340_bmxp342020
20 Schneider-electric bmxnoc0401
21 Schneider-electric bmxnoe0100
22 Schneider-electric bmxnoe0110
23 Schneider-electric modicon_m340_bmxp3420302
24 Schneider-electric modicon_m340_bmxp342000
25 Schneider-electric modicon_m340_bmxp3420102
26 Schneider-electric modicon_m340_bmxp3420102cl_firmware
27 Schneider-electric modicon_m340_bmxp3420102cl
28 Schneider-electric 140cpu65150
29 Schneider-electric modicon_m340_bmxp3420302cl_firmware
30 Schneider-electric modicon_m340_bmxp3420302cl
31 Schneider-electric tsxp574634
32 Schneider-electric tsxp575634
33 Schneider-electric tsxp576634
34 Schneider-electric tsxety4103
35 Schneider-electric tsxety5103
36 Schneider-electric 140noe77111
37 Schneider-electric 140noc78000
38 Schneider-electric 140noc78100
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-2020-7549.

URL Resource
https://www.se.com/ww/en/download/document/SEVD-2020-343-06/ 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-2020-7549 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-7549 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]

    Dec. 14, 2020

    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:L
    Changed Reference Type https://www.se.com/ww/en/download/document/SEVD-2020-343-06/ No Types Assigned https://www.se.com/ww/en/download/document/SEVD-2020-343-06/ Vendor Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp341000_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp341000:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp342000_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp342000:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp3420102_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp3420102:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp3420102cl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp3420102cl:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp342020_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp342020:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp3420302_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp3420302:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxp3420302cl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.30 OR cpe:2.3:h:schneider-electric:bmxp3420302cl:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.4 OR cpe:2.3:h:schneider-electric:bmxnoe0100:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 6.6 OR cpe:2.3:h:schneider-electric:bmxnoe0110:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:bmxnoc0401:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:140noe77111_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 7.3 OR cpe:2.3:h:schneider-electric:140noe77111:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:140noc78100_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:140noc78100:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:140noc78000_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:140noc78000:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:140cpu65150:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tsxety4103_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tsxety4103:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tsxety5103_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tsxety5103:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tsxp574634:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tsxp575634_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tsxp575634:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tsxp576634_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tsxp576634:-:*:*:*:*:*:*:*
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-2020-7549 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-2020-7549 weaknesses.

Exploit Prediction

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

0.09 }} 0.01%

score

0.38545

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability