// For flags

CVE-2017-12719

Advantech WebAccess webvrpcs drawsrv Untrusted Pointer Dereference Remote Code Execution Vulnerability

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An Untrusted Pointer Dereference issue was discovered in Advantech WebAccess versions prior to V8.2_20170817. A remote attacker is able to execute code to dereference a pointer within the program causing the application to become unavailable.

Se ha descubierto un problema de desreferencia de puntero no fiable en Advantech WebAccess en versiones anteriores a la V8.2_20170817. Un atacante remoto puede ejecutar código para desreferenciar un puntero en el programa, provocando que la aplicación deje de estar disponible.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of the 0x2775 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this functionality to execute code under the context of Administrator.

*Credits: Steven Seeley (mr_me) of Offensive Security
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
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
  • 2017-08-09 CVE Reserved
  • 2017-11-06 CVE Published
  • 2024-08-05 CVE Updated
  • 2024-11-18 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-476: NULL Pointer Dereference
  • CWE-822: Untrusted Pointer Dereference
CAPEC
References (2)
URL Tag Source
http://www.securityfocus.com/bid/101685 Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-17-306-02 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"
 < 8.2_20170817
Search vendor "Advantech" for product "Webaccess" and version " < 8.2_20170817"
-
Affected