Vulnerability identifier: #VU16509

Vulnerability risk: Low

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: CVE-2018-11462

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SINUMERIK 808D
Hardware solutions / Firmware
SINUMERIK 840D
Hardware solutions / Firmware
SINUMERIK 828D
Server applications / SCADA systems

Vendor: Siemens

Description

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

The vulnerability exists due to improper privileges and access controls. A remote attacker can send a specially crafted authentication request and gain elevated privileges.

Mitigation
Update SINUMERIK 828D to version 4.7 SP6 HF1.
Update SINUMERIK 840D to version 4.7 SP6 HF5 or 4.8 SP3.

Vulnerable software versions

SINUMERIK 808D: All versions

SINUMERIK 828D: All versions

SINUMERIK 840D: All versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-170881.pdf

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Q & A

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.