7.5
HIGH
CVE-2021-41769
Siemens SIPROTEC 5 Web Server Impersonation Vulnerability
Description

A vulnerability has been identified in SIPROTEC 5 6MD85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 6MD86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 6MD89 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 6MU85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7KE85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SA82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SA86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SA87 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SD82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SD86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SD87 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SJ81 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SJ82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SJ85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SJ86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SK82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SK85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SL82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7SL86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SL87 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SS85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7ST85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7SX85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7UM85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7UT82 devices (CPU variant CP100) (All versions < V8.83), SIPROTEC 5 7UT85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7UT86 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7UT87 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7VE85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 7VK87 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 Compact 7SX800 devices (CPU variant CP050) (All versions < V8.83). An improper input validation vulnerability in the web server could allow an unauthenticated user to access device information.

INFO

Published Date :

Jan. 11, 2022, 12:15 p.m.

Last Modified :

Jan. 19, 2022, 4:49 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-2021-41769 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 6md85_firmware
2 Siemens 6md86_firmware
3 Siemens 6md89_firmware
4 Siemens 6mu85_firmware
5 Siemens 7ke85_firmware
6 Siemens 7sa82_firmware
7 Siemens 7sa86_firmware
8 Siemens 7sa87_firmware
9 Siemens 7sd82_firmware
10 Siemens 7sd86_firmware
11 Siemens 7sd87_firmware
12 Siemens 7sj81_firmware
13 Siemens 7sj82_firmware
14 Siemens 7sj85_firmware
15 Siemens 7sj86_firmware
16 Siemens 7sk82_firmware
17 Siemens 7sk85_firmware
18 Siemens 7sl82_firmware
19 Siemens 7sl86_firmware
20 Siemens 7sl87_firmware
21 Siemens 7ss85_firmware
22 Siemens 7st85_firmware
23 Siemens 7sx800_firmware
24 Siemens 7sx85_firmware
25 Siemens 7um85_firmware
26 Siemens 7ut82_firmware
27 Siemens 7ut85_firmware
28 Siemens 7ut86_firmware
29 Siemens 7ut87_firmware
30 Siemens 7ve85_firmware
31 Siemens 7vk87_firmware
: Total Affected Vendor : 1 | Products : 31
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-2021-41769.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-439673.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-2021-41769 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-41769 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]

    Jan. 19, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-439673.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-439673.pdf Vendor Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:6md85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:6md85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:6md86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:6md86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:6md89_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:6md89:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:6mu85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:6mu85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ke85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ke85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sa82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sa82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sa86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sa86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sa87_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sa87:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sd82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sd82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sd86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sd86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sd87_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sd87:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sj81_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sj81:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sj82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sj82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sj85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sj85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sj86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sj86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sk82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sk82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sk85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sk85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sl82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sl82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sl86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sl86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sl87_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sl87:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ss85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ss85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7st85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7st85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sx800_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sx800:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7sx85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7sx85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7um85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7um85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ut82_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ut82:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ut85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ut85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ut86_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ut86:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ut87_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ut87:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7ve85_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7ve85:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:7vk87_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 8.83 OR cpe:2.3:h:siemens:7vk87:-:*:*:*:*:*:*:*
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-2021-41769 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-2021-41769 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-23: File Content Injection File Content Injection CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-73: User-Controlled Filename User-Controlled Filename CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-81: Web Server Logs Tampering Web Server Logs Tampering CAPEC-83: XPath Injection XPath Injection CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-88: OS Command Injection OS Command Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-109: Object Relational Mapping Injection Object Relational Mapping Injection CAPEC-110: SQL Injection through SOAP Parameter Tampering SQL Injection through SOAP Parameter Tampering CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-136: LDAP Injection LDAP Injection CAPEC-153: Input Data Manipulation Input Data Manipulation CAPEC-182: Flash Injection Flash Injection CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-250: XML Injection XML Injection CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data Fuzzing for garnering other adjacent user/sensitive data CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-473: Signature Spoof Signature Spoof CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-664: Server Side Request Forgery Server Side Request Forgery
Exploit Prediction

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

0.12 }} 0.00%

score

0.46246

percentile

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