// For flags

CVE-2018-7499

Advantech WebAccess Node BwPSLinkZip Stack-based Buffer Overflow Remote Code Execution Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, several stack-based buffer overflow vulnerabilities have been identified, which may allow an attacker to execute arbitrary code.

En Advantech WebAccess en versiones V8.2_20170817 y anteriores, WebAccess en versiones V8.3.0 y anteriores, WebAccess Dashboard en versiones V.2.0.15 y anteriores, WebAccess Scada Node en versiones anteriores a la 8.3.1 y WebAccess/NMS 2.0.3 y anteriores, se han identificado varias vulnerabilidades de desbordamiento de búfer que podrían permitir que un atacante ejecute código arbitrario.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within BwPSLinkZip.exe, which is accessed through the 0x2711 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code under the context of Administrator.

*Credits: Mat Powell - Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-02-26 CVE Reserved
  • 2018-05-15 CVE Published
  • 2024-03-24 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
References (2)
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"
<= 8.2_20170817
Search vendor "Advantech" for product "Webaccess" and version " <= 8.2_20170817"
-
Affected
Advantech
Search vendor "Advantech"
Webaccess
Search vendor "Advantech" for product "Webaccess"
<= 8.3.0
Search vendor "Advantech" for product "Webaccess" and version " <= 8.3.0"
-
Affected
Advantech
Search vendor "Advantech"
Webaccess Dashboard
Search vendor "Advantech" for product "Webaccess Dashboard"
<= 2.0.15
Search vendor "Advantech" for product "Webaccess Dashboard" and version " <= 2.0.15"
-
Affected
Advantech
Search vendor "Advantech"
Webaccess Scada
Search vendor "Advantech" for product "Webaccess Scada"
< 8.3.1
Search vendor "Advantech" for product "Webaccess Scada" and version " < 8.3.1"
-
Affected
Advantech
Search vendor "Advantech"
Webaccess\/nms
Search vendor "Advantech" for product "Webaccess\/nms"
<= 2.0.3
Search vendor "Advantech" for product "Webaccess\/nms" and version " <= 2.0.3"
-
Affected