CVE-2019-6574 Denial of service in SINAMICS PERFECT HARMONY GH180 with NXG I control, MLFBs: 6SR2...-, 6SR3...-, 6SR4...-
An attacker with network access can cause a controller restart via improperly configured Field bus parameters, compromising system 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-2019-6574?
CVE-2019-6574 is a high-severity denial of service vulnerability in Siemens AG SINAMICS PERFECT HARMONY GH180 with NXG I control, MLFBs: 6SR2...-, 6SR3...-, 6SR4...-, published on 14 May 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 SINAMICS PERFECT HARMONY GH180 with NXG I control, MLFBs: 6SR2...-, 6SR3...-, 6SR4...- (All Versions with option G21, G22, G23, G26, G28, G31, G32, G38, G43 or G46), SINAMICS PERFECT HARMONY GH180 with NXG II control, MLFBs: 6SR2...-, 6SR3...-, 6SR4...- (All Versions with option G21, G22, G23, G26, G28, G31, G32, G38, G43 or G46). An improperly configured Parameter Read/Write execution via Field bus network may cause the controller to restart. The vulnerability could be exploited by an attacker with network access to the device. Successful exploitation requires no privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the affected system. At the time of advisory publication no public exploitation of this security vulnerability was known.
Weakness: CWE-200
Which versions are affected by CVE-2019-6574?
It affects 6 products.
Products include Siemens Sinamics Perfect Harmony Gh180 With Nxg I Control Mlfb 6sr2 Firmware, Siemens Sinamics Perfect Harmony Gh180 With Nxg I Control Mlfb 6sr3 Firmware, Siemens Sinamics Perfect Harmony Gh180 With Nxg I Control Mlfb 6sr4 Firmware, Siemens Sinamics Perfect Harmony Gh180 With Nxg Ii Control Mlfb 6sr2 Firmware, Siemens Sinamics Perfect Harmony Gh180 With Nxg Ii Control Mlfb 6sr3 Firmware, Siemens Sinamics Perfect Harmony Gh180 With Nxg Ii Control Mlfb 6sr4 Firmware.
How do I fix CVE-2019-6574?
No fix has been published for CVE-2019-6574 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-2019-6574 being exploited?
There is no known exploitation of CVE-2019-6574 in the wild and no public exploit code.
Other vulnerabilities in Siemens AG SINAMICS PERFECT HARMONY GH180 with NXG I control, MLFBs: 6SR2...-, 6SR3...-, 6SR4...-
Sources
Also known as GHSA-3q95-xjvq-cqjf.