CVE-2018-13815 Denial of service in SIMATIC S7-1200, SIMATIC S7-1500
An attacker can cause a Denial-of-Service condition on Siemens SIMATIC S7-1200 and S7-1500 devices by exhausting the connection pool via port 102/tcp.
- 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-2018-13815?
CVE-2018-13815 is a high-severity denial of service vulnerability in Siemens AG SIMATIC S7-1200, SIMATIC S7-1500, published on 13 Dec 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 SIMATIC S7-1200 (All versions), SIMATIC S7-1500 (All Versions < V2.6). An attacker could exhaust the available connection pool of an affected device by opening a sufficient number of connections to the device. Successful exploitation requires an attacker to be able to send packets to port 102/tcp of the affected device. No user interaction and no user privileges are required to exploit the vulnerability. The vulnerability, if exploited, could cause a Denial-of-Service condition impacting the availability of the system. At the time of advisory publication no public exploitation of this vulnerability was known.
Which versions are affected by CVE-2018-13815?
It affects 2 products.
Products include Siemens Simatic S7-1200 Firmware, Siemens Simatic S7-1500 Firmware.
How do I fix CVE-2018-13815?
No fix has been published for CVE-2018-13815 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-2018-13815 being exploited?
There is no known exploitation of CVE-2018-13815 in the wild and no public exploit code.
Sources
Also known as GHSA-jwv4-wwvg-5p94.