Vulnerability identifier: #VU64575
Vulnerability risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-603
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
SIMATIC WinCC OA
Server applications /
SCADA systems
Vendor: Siemens
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected applications use client-side only authentication when neither server-side authentication nor Kerberos authentication is enabled. A remote attacker can impersonate other users or exploit the client-server protocol without being authenticated.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
SIMATIC WinCC OA: 3.16 - 3.18
External links
http://cert-portal.siemens.com/productcert/pdf/ssa-111512.pdf
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.