// For flags

CVE-2019-13552

Advantech WebAccess Node BwDlgpUp Arbitrary File Deletion Vulnerability

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In WebAccess versions 8.4.1 and prior, multiple command injection vulnerabilities are caused by a lack of proper validation of user-supplied data and may allow arbitrary file deletion and remote code execution.

En WebAccess versiones 8.4.1 y anteriores, múltiples vulnerabilidades de inyección de comandos son causadas por una falta de comprobación apropiada de los datos suministrados por el usuario y pueden permitir la eliminación de archivos arbitraria y la ejecución de código remota.

This vulnerability allows remote attackers to delete arbitrary files on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within BwDlgpUp.exe, which is accessed through the 0x2711 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of Administrator.

*Credits: Mat Powell of Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-07-11 CVE Reserved
  • 2019-09-17 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-27 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC
References (1)
URL Tag Source
https://www.us-cert.gov/ics/advisories/icsa-19-260-01 Third Party Advisory
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
Advantech
Search vendor "Advantech"
 Webaccess
Search vendor "Advantech" for product "Webaccess"
 <= 8.4.1
Search vendor "Advantech" for product "Webaccess" and version " <= 8.4.1"
-
Affected