// For flags

CVE-2021-38406

Delta Electronics DOPSoft 2 Improper Input Validation Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files. This could result in multiple out-of-bounds write instances. An attacker could leverage this vulnerability to execute code in the context of the current process.

Delta Electronic DOPSoft 2 (versiones 2.00.07 y anteriores) no comprueban apropiadamente los datos suministrados por el usuario cuando analiza archivos de proyecto específicos. Esto podría resultar en múltiples instancias de escritura fuera de límites. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation DOPSoft. 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 XLS 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 buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Delta Electronics DOPSoft 2 lacks proper validation of user-supplied data when parsing specific project files (improper input validation) resulting in an out-of-bounds write that allows for code execution.

*Credits: kimiya, working with Trend Micro’s Zero Day Initiative
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
  • 2021-08-09 CVE Published
  • 2021-08-10 CVE Reserved
  • 2022-08-25 Exploited in Wild
  • 2022-09-15 KEV Due Date
  • 2024-09-17 CVE Updated
  • 2024-10-04 EPSS Updated
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
References (1)
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Deltaww
Search vendor "Deltaww"
Dopsoft
Search vendor "Deltaww" for product "Dopsoft"
>= 2.00 <= 2.00.07
Search vendor "Deltaww" for product "Dopsoft" and version " >= 2.00 <= 2.00.07"
-
Affected