Description
A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Siemens / SCALANCE X204RNA EEC (HSR)All versions < V3.2.7 – All versions < V3.2.7
- Siemens / SCALANCE X204RNA EEC (PRP)All versions < V3.2.7 – All versions < V3.2.7
- Siemens / SCALANCE X204RNA EEC (PRP/HSR)All versions < V3.2.7 – All versions < V3.2.7
- Siemens / SCALANCE X204RNA (HSR)All versions < V3.2.7 – All versions < V3.2.7
- Siemens / SCALANCE X204RNA (PRP)All versions < V3.2.7 – All versions < V3.2.7