CVE-2017-6870 Weak cryptography in SIMATIC WinCC Sm@rtClient for Android

High 7.4 Published Updated

Attackers can read and modify data in TLS sessions via Man-in-the-Middle attacks due to weak cryptography in the Siemens WinCC Android client.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-6870?

CVE-2017-6870 is a high-severity vulnerability in SIMATIC WinCC Sm@rtClient for Android, published on 8 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2). The existing TLS protocol implementation could allow an attacker to read and modify data within a TLS session while performing a Man-in-the-Middle (MitM) attack.

Weakness: CWE-300

Which versions are affected by CVE-2017-6870?

It affects 1 product.

Products include Siemens Simatic Wincc Sm\@rtclient.

How do I fix CVE-2017-6870?

No fix has been published for CVE-2017-6870 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-6870 being exploited?

There is no known exploitation of CVE-2017-6870 in the wild and no public exploit code.

Sources

Also known as GHSA-fhhq-wp7p-mxf8.

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