SSA-786884 V1.0: Insufficient Randomness in Session Identifier Vulnerability in SIPROTEC 5

Risk Summary

<p>The SIPROTEC 5 devices do not use sufficiently random numbers to generate session identifiers. This could facilitate a brute-force attack against a valid session identifier which could allow an unauthenticated remote attacker to hijack a valid user session. The affected session identifiers are only used in a subset of the endpoints that are provided by the affected products.</p> <p>Siemens is preparing fix versions and recommends countermeasures for products where fixes are not, or not yet available.</p>

Remediations

• Refer to Siemens ProductCERT advisory for patch and remediation guidance.

Affected Vendors

Affected Products (1)