SB2018081511 - Privilege escalation in Siemens SIMATIC STEP 7 and SIMATIC WinCC 

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Main Vulnerability Database SB2018081511

SB2018081511 - Privilege escalation in Siemens SIMATIC STEP 7 and SIMATIC WinCC

Published: August 15, 2018

Security Bulletin ID SB2018081511
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Privilege escalation (CVE-ID: CVE-2018-11453)

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper file permissions in the default installation of TIA Portal. A local unauthenticated attacker can attempt to start TIA Portal after the manipulation, insert specially crafted files and prevent TIA Portal startup (denial-of-service) or execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Privilege escalation (CVE-ID: CVE-2018-11454)

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper file permissions in the default installation of TIA Portal. A local unauthenticated attacker can transfer the manipulated files to a device and cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References