Detections
Analytics
Advantech WebAccess webvrpcs.exe Path Traversal RCE
critical Nessus Plugin ID 117360
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Synopsis
The remote host is running a SCADA application that is affected by a path traversal vulnerability.Description
The Advantech WebAccess/SCADA Network Service (webvrpcs.exe) running on the remote host is affected by a path traversal vulnerability due to the failure to properly validate user-supplied input when processing a DCERPC request. An unauthenticated, remote attacker can exploit this, via a series of crafted requests, to execute arbitrary code.Note that this vulnerability is supposedly fixed in WebAccess/SCADA version 8.3, but it appears that versions 8.3.1 and 8.3.2 are still vulnerable.
Solution
WebAccess/SCADA version 8.3.3 or later appears to fix the issue.Contact vendor for confirmation.
See Also
https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02A
Plugin Details
Severity: Critical
ID: 117360
File Name: scada_advantech_webaccess_cve-2017-16720.nbin
Version: 1.148
Type: remote
Family: SCADA
Published: 9/10/2018
Updated: 11/12/2024
Configuration: Enable thorough checks
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2017-16720
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:advantech:webaccess
Exploit Available: true
Exploit Ease: Exploits are available
Exploited by Nessus: true
Vulnerability Publication Date: 1/4/2018
Reference Information
CVE: CVE-2017-16720
BID: 102424