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ID

VAR-201903-1777


TITLE

Advantech WebAccess Node spchapi Improper Access Control Remote Code Execution Vulnerability

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sources: ZDI: ZDI-19-292

DESCRIPTION

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.The specific flaw exists within spchapi.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 string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of Administrator.

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sources: ZDI: ZDI-19-292

AFFECTED PRODUCTS

vendor:advantechmodel:webaccessscope: - version: -

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sources: ZDI: ZDI-19-292

CVSS

SEVERITY

CVSSV2

CVSSV3

ZDI: ZDI-19-292
value: CRITICAL

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ZDI: ZDI-19-292
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.9
version: 3.0

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sources: ZDI: ZDI-19-292

EXTERNAL IDS

db:ZDI_CANid:ZDI-CAN-7907

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db:ZDIid:ZDI-19-292

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sources: ZDI: ZDI-19-292

CREDITS

Mat Powell of Trend Micro Zero Day Initiative

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sources: ZDI: ZDI-19-292

SOURCES

db:ZDIid:ZDI-19-292

LAST UPDATE DATE

2022-05-17T01:47:51.129000+00:00


SOURCES UPDATE DATE

db:ZDIid:ZDI-19-292date:2019-03-28T00:00:00

SOURCES RELEASE DATE

db:ZDIid:ZDI-19-292date:2019-03-28T00:00:00