// For flags

CVE-2021-27387

Siemens Simcenter Femap modfem File Parsing Out-Of-Bounds Write 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 Simcenter Femap 2020.2 (All versions < V2020.2.MP3), Simcenter Femap 2021.1 (All versions < V2021.1.MP3). The femap.exe application lacks proper validation of user-supplied data when parsing FEMAP files. This could result in an out of bounds write past the end of an allocated structure, a different vulnerability than CVE-2021-27399. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12819)

Se ha identificado una vulnerabilidad en Simcenter Femap versiones 2020.2 (Todas las versiones anteriores a V2020.2.MP3), Simcenter Femap versiones 2021.1 (Todas las versiones anteriores a V2021.1.MP3). La aplicación femap.exe carece de una comprobación apropiada de los datos suministrados por el usuario cuando se analizan los archivos FEMAP. Esto podría resultar en una escritura fuera de límites más allá del final de una estructura asignada, una vulnerabilidad diferente a la CVE-2021-27399. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. (ZDI-CAN-12819)

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens Simcenter Femap. 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 modfem files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. 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
  • 2021-06-08 CVE Published
  • 2024-06-25 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
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"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
< 2020.2
Search vendor "Siemens" for product "Simcenter Femap" and version " < 2020.2"
-
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2020.2
Search vendor "Siemens" for product "Simcenter Femap" and version "2020.2"
-
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2020.2
Search vendor "Siemens" for product "Simcenter Femap" and version "2020.2"
maintenance_pack1
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2020.2
Search vendor "Siemens" for product "Simcenter Femap" and version "2020.2"
maintenance_pack2
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2021.1
Search vendor "Siemens" for product "Simcenter Femap" and version "2021.1"
-
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2021.1
Search vendor "Siemens" for product "Simcenter Femap" and version "2021.1"
maintenance_pack1
Affected
Siemens
Search vendor "Siemens"
Simcenter Femap
Search vendor "Siemens" for product "Simcenter Femap"
2021.1
Search vendor "Siemens" for product "Simcenter Femap" and version "2021.1"
maintenance_pack2
Affected