Siemens SIMATIC S7-1200 CPU < 4.2.3 Authentication Bypass

high Nessus Network Monitor Plugin ID 720163

Synopsis

Siemens SIMATIC S7-1200 CPU could allow a Cross-Site Request Forgery (CSRF) attack.

Description

A vulnerability has been identified in SIMATIC S7-1200 CPU family version 4 (All versions < v4.2.3). The web interface could allow a Cross-Site Request Forgery (CSRF) attack if an unsuspecting user is tricked into accessing a malicious link. Successful exploitation requires user interaction by a legitimate user, who must be authenticated to the web interface. A successful attack could allow an attacker to trigger actions via the web interface that the legitimate user is allowed to perform. This could allow the attacker to read or modify parts of the device configuration.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

Plugin Details

Severity: High

ID: 720163

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 10/9/2018

Vulnerability Publication Date: 10/9/2018

Reference Information

CVE: CVE-2018-13800

BID: 105542

Detections

Analytics