Vulnerability · Published Sep 10, 2024 · Assigned by siemens
CVE-2024-43647
High 7.5
In plain English
A high-severity uncontrolled resource consumption in SIMATIC S7-200 SMART CPU CR40 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official description
A vulnerability has been identified in SIMATIC S7-200 SMART CPU CR40 (6ES7288-1CR40-0AA0) (All versions), SIMATIC S7-200 SMART CPU CR60 (6ES7288-1CR60-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA1) (All versions). Affected devices do not properly handle TCP packets with an incorrect structure. This could allow an unauthenticated remote attacker to cause a denial of service condition. To restore normal operations, the network cable of the device needs to be unplugged and re-plugged.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC S7-200 SMART CPU CR40 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU CR60 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR20 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR20 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR30 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR30 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR40 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR40 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR60 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU SR60 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST20 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST20 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST30 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST30 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST40 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST40 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST60 | 0 – before * |
| Siemens | SIMATIC S7-200 SMART CPU ST60 | 0 – before * |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:T/RC:C