Vulnerability identifier: #VU16510

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11463

CWE-ID: CWE-121

Exploitation vector: Local

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 local attacker to gain elevated privileges on the target system.

The vulnerability exists due to stack-based buffer overflow in the service command application when handling malicious input. A local attacker can execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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?

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.