A vulnerability has been identified in SINAMICS PERFECT HARMONY GH180 with NXG I control, MLFBs: 6SR2…-, 6SR3…-, 6SR4…- (All Versions with option G28), SINAMICS PERFECT HARMONY GH180 with NXG II control, MLFBs: 6SR2…-, 6SR3…-, 6SR4…- (All Versions with option G28). A denial of service vulnerability exists in the affected products. 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 availability of the affected system. At the time of advisory publication no public exploitation of this security vulnerability was known.
The product does not properly control the allocation and maintenance of a limited resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Sinamics_perfect_harmony_gh180_with_nxg_i_control_mlfb_6sr2_firmware | Siemens | * | * |
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.