Privilege escalation in Siemens SIMATIC WinCC

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU77318

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-30897

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to incorrect permission assignment for critical resource. A local user can gain elevated privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Siemens SIMATIC WinCC: before 7.5.2.13

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-914026.pdf

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.