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Vulnerability · Published Dec 13, 2022 · Assigned by siemens

CVE-2022-46353

Critical 9.8

In plain English

A critical-severity weak randomness in SCALANCE X204RNA EEC (HSR) from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.1%top 35.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Siemens SCALANCE X204RNA (HSR) All versions < V3.2.7
Siemens SCALANCE X204RNA (PRP) All versions < V3.2.7
Siemens SCALANCE X204RNA EEC (HSR) All versions < V3.2.7
Siemens SCALANCE X204RNA EEC (PRP) All versions < V3.2.7
Siemens SCALANCE X204RNA EEC (PRP/HSR) All versions < V3.2.7

Weakness: CWE-330 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References