// For flags

CVE-2021-27396

Siemens Tecnomatix Plant Simulation SPP File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability has been identified in Tecnomatix Plant Simulation (All versions < V16.0.5). The PlantSimCore.dll library lacks proper validation of user-supplied data when parsing SPP files. This could result in a stack based buffer overflow, a different vulnerability than CVE-2021-27398. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13279)

Se ha identificado una vulnerabilidad en Tecnomatix Plant Simulation (Todas las versiones anteriores a V16.0.5). La biblioteca PlantSimCore.dll carece de una comprobación apropiada de los datos suministrados por el usuario al analizar archivos SPP. Esto podría resultar en un desbordamiento del búfer en la región stack de la memoria, una vulnerabilidad diferente de CVE-2021-27398. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. (ZDI?CAN?13279)

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens Tecnomatix Plant Simulation. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SPP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Francis Provencher {PRL}
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-18 CVE Reserved
  • 2021-05-12 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-09-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
 Tecnomatix Plant Simulation
Search vendor "Siemens" for product "Tecnomatix Plant Simulation"
 < 16.0.5
Search vendor "Siemens" for product "Tecnomatix Plant Simulation" and version " < 16.0.5"
-
Affected