Privilege escalation in SIMATIC WinCC (TIA Portal) and SIMATIC STEP 7 (TIA Portal) - CVE-2018-11453
Published: August 14, 2018 / Updated: August 15, 2018
Vulnerability identifier: #VU14415
CSH Severity: Low
CVSS v4: 8.6 [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]
CVE-ID: CVE-2018-11453
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
SIMATIC WinCC (TIA Portal)
SIMATIC STEP 7 (TIA Portal)
SIMATIC STEP 7 (TIA Portal)
How to mitigate CVE-2018-11453
Install update from vendor's website.
SIMATIC WinCC (TIA Portal) - addressed in versions 14.0 Update 6, 15.0 Update 2
SIMATIC STEP 7 (TIA Portal) - addressed in versions 14.0 Update 6, 15.0 Update 2
SIMATIC STEP 7 (TIA Portal) - addressed in versions 14.0 Update 6, 15.0 Update 2