CVE-2018-13807 Denial of service in SCALANCE X300, SCALANCE X408, SCALANCE X414

What is CVE-2018-13807?

CVE-2018-13807 is a high-severity denial of service vulnerability in Siemens AG SCALANCE X300, SCALANCE X408, SCALANCE X414, published on 12 Sep 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 SCALANCE X300 (All versions < V4.0.0), SCALANCE X408 (All versions < V4.0.0), SCALANCE X414 (All versions). The web interface on port 443/tcp could allow an attacker to cause a Denial-of-Service condition by sending specially crafted packets to the web server. The device will automatically reboot, impacting network availability for other devices. An attacker must have network access to port 443/tcp to exploit the vulnerability. Neither valid credentials nor interaction by a legitimate user is required to exploit the vulnerability. There is no confidentiality or integrity impact, only availability is temporarily impacted. This vulnerability could be triggered by publicly available tools.

Weakness: CWE-20

Which versions are affected by CVE-2018-13807?

It affects 3 products.

Products include Siemens Scalance X300 Firmware, Siemens Scalance X408 Firmware, Siemens Scalance X414 Firmware.

How do I fix CVE-2018-13807?

No fix has been published for CVE-2018-13807 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-2018-13807 being exploited?

There is no known exploitation of CVE-2018-13807 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-x4vv-2q68-xx2p.