CVE-2018-11458 Information

Description

A vulnerability has been identified in SINUMERIK 828D V4.7 (All versions V4.7 SP6 HF1) SINUMERIK 840D sl V4.7 (All versions V4.7 SP6 HF5) SINUMERIK 840D sl V4.8 (All versions V4.8 SP3). The integrated VNC server on port 5900/tcp of the affected products could allow a remote attacker to execute code with privileged permissions on the system by sending specially crafted network requests to port 5900/tcp. Please note that this vulnerability is only exploitable if port 5900/tcp is manually opened in the firewall configuration of network port X130. The security vulnerability could be exploited by an attacker with network access to the affected devices and port. Successful exploitation requires no privileges and no user interaction. The vulnerability could allow an attacker to compromise confidentiality integrity and availability of the VNC server. At the time of advisory publication no public exploitation of this security vulnerability was known.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/106185 https://cert-portal.siemens.com/productcert/pdf/ssa-170881.pdf

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1