A vulnerability has been identified in SIMATIC STEP 7 (TIA Portal) V15 (All versions), SIMATIC STEP 7 (TIA Portal) V16 (All versions < V16 Update 5), SIMATIC STEP 7 (TIA Portal) V17 (All versions < V17 Update 2). An attacker could achieve privilege escalation on the web server of certain devices due to improper access control vulnerability in the engineering system software. The attacker needs to have direct access to the impacted web server.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Simatic_step_7 | Siemens | 15 (including) | 16 (excluding) |
| Simatic_step_7 | Siemens | 16 (including) | 16 (including) |
| Simatic_step_7 | Siemens | 16-update1 (including) | 16-update1 (including) |
| Simatic_step_7 | Siemens | 16-update2 (including) | 16-update2 (including) |
| Simatic_step_7 | Siemens | 16-update3 (including) | 16-update3 (including) |
| Simatic_step_7 | Siemens | 16-update4 (including) | 16-update4 (including) |
| Simatic_step_7 | Siemens | 17 (including) | 17 (including) |
| Simatic_step_7 | Siemens | 17-update1 (including) | 17-update1 (including) |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: