CVE-2018-4861 Path traversal in SCALANCE M875

Medium 4.9 Published Updated

An authenticated administrative user can read and download arbitrary files from the SCALANCE M875 device file system via the web interface.

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

What is CVE-2018-4861?

CVE-2018-4861 is a medium-severity path traversal vulnerability in Siemens AG SCALANCE M875, published on 26 Jun 2018. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability has been identified in SCALANCE M875 (All versions). An authenticated remote attacker with access to the web interface (443/tcp), could potentially read and download arbitrary files from the device's file system. Successful exploitation requires that the attacker has network access to the web interface. The attacker must be authenticated as administrative user to exploit the security vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.

Weakness: CWE-200, CWE-22

Which versions are affected by CVE-2018-4861?

It affects 1 product.

Products include Siemens Scalance M875 Firmware.

How do I fix CVE-2018-4861?

No fix has been published for CVE-2018-4861 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2018-4861 being exploited?

There is no known exploitation of CVE-2018-4861 in the wild and no public exploit code.

Sources

Also known as GHSA-8x7m-7665-m6x8.

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