Privilege escalation in SIMATIC WinCC (TIA Portal) and SIMATIC STEP 7 (TIA Portal) - CVE-2018-11454
Published: August 15, 2018
Vulnerability identifier: #VU14416
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-11454
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
SIMATIC WinCC (TIA Portal)
SIMATIC STEP 7 (TIA Portal)
SIMATIC WinCC (TIA Portal)
SIMATIC STEP 7 (TIA Portal)
Detailed vulnerability description
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.
How to mitigate CVE-2018-11454
Install update from vendor's website.