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CVE-2018-4837 Denial of service in TeleControl Server Basic

High 7.5 Published Updated

An attacker can cause a Denial-of-Service condition on the TeleControl Server Basic web server, affecting availability but not other functionality.

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-2018-4837?

CVE-2018-4837 is a high-severity denial of service vulnerability in Siemens Telecontrol Server Basic, published on 25 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in TeleControl Server Basic < V3.1. An attacker with access to the TeleControl Server Basic's webserver (port 80/tcp or 443/tcp) could cause a Denial-of-Service condition on the web server. The remaining functionality of the TeleControl Server Basic is not affected by the Denial-of-Service condition.

Weakness: CWE-400

Which versions are affected by CVE-2018-4837?

It affects 1 product.

Products include Siemens Telecontrol Server Basic.

How do I fix CVE-2018-4837?

No fix has been published for CVE-2018-4837 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-4837 being exploited?

There is no known exploitation of CVE-2018-4837 in the wild and no public exploit code.

All Siemens Telecontrol Server Basic vulnerabilities

Sources

Also known as GHSA-ffhv-q28c-fp4h.

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