Vulnerability identifier: #VU7516

Vulnerability 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-2017-6871

CWE-ID: CWE-288

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
SIMATIC WinCC Sm@rtClient for Android
Server applications / SCADA systems

Vendor: Siemens

Description
The vulnerability allows a remote attacker to bypass authentication.

The weakness exists due to unknown error. A local attacker can use alternate path or channel to bypass the app’s authentication mechanism.

Mitigation
Update SIMATIC WinCC Sm@rtClient Lite for Android to version 1.0.2.2.

Vulnerable software versions

SIMATIC WinCC Sm@rtClient for Android: 01.00.01.00 Lite

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External links
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-589378.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.