CVE-2019-13921 Denial of service in SIMATIC WinAC RTX (F) 2010
Unauthenticated attackers can cause a denial of service in SIMATIC WinAC RTX by sending large HTTP requests, impacting service availability.
- 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-2019-13921?
CVE-2019-13921 is a high-severity denial of service vulnerability in Siemens AG SIMATIC WinAC RTX (F) 2010, published on 10 Oct 2019. 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 WinAC RTX (F) 2010 (All versions < SP3 Update 1). Affected versions of the software contain a vulnerability that could allow an unauthenticated attacker to trigger a denial-of-service condition. The vulnerability can be triggered if a large HTTP request is sent to the executing service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the service provided by the software.
Which versions are affected by CVE-2019-13921?
It affects 1 product.
Products include Siemens Simatic Winac Rtx \(F\) 2010.
How do I fix CVE-2019-13921?
No fix has been published for CVE-2019-13921 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-2019-13921 being exploited?
There is no known exploitation of CVE-2019-13921 in the wild and no public exploit code.
Sources
Also known as GHSA-rf96-4cxg-vq3q.