Advantech WebAccess Authentication Bypass

medium Nessus Plugin ID 96875
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VPR Score: 5.2

Synopsis

The remote host is running a web application that is affected by an authentication bypass vulnerability.

Description

The Advantech WebAccess web server running on the remote host is affected by an authentication bypass vulnerability in the WaExlViewer component due to a failure to properly manage authentication. An unauthenticated, remote attacker can exploit this, via a POST request with specially crafted parameters, to bypass intended restrictions, allowing the attacker to access restricted pages, upload template files, and delete existing templates.

Solution

Contact the vendor for a solution.

See Also

https://www.tenable.com/security/research/tra-2017-04

https://ics-cert.us-cert.gov/advisories/ICSA-17-012-01

https://www.zerodayinitiative.com/advisories/ZDI-17-043/

Plugin Details

Severity: Medium

ID: 96875

File Name: scada_advantech_webaccess_cve-2017-5152.nbin

Version: 1.58

Type: remote

Family: SCADA

Published: 1/30/2017

Updated: 4/20/2021

Dependencies: scada_advantech_webaccess_detect.nbin

Risk Information

Risk Factor: Medium

VPR Score: 5.2

CVSS Score Source: CVE-2017-5152

CVSS v2.0

Base Score: 6.4

Temporal Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:advantech:webaccess

Required KB Items: www/scada_advantech_webaccess

Exploit Available: true

Exploit Ease: Exploits are available

Exploited by Nessus: true

Patch Publication Date: 1/12/2017

Vulnerability Publication Date: 1/12/2017

Reference Information

CVE: CVE-2017-5152

BID: 95410

ICSA: 17-012-01

TRA: TRA-2017-04

ZDI: ZDI-17-043