CVE-2021-31340 Information

Description

A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2) SIMATIC RF185C (All versions > V1.1 and < V1.3.2) SIMATIC RF186C (All versions > V1.1 and < V1.3.2) SIMATIC RF186CI (All versions > V1.1 and < V1.3.2) SIMATIC RF188C (All versions > V1.1 and < V1.3.2) SIMATIC RF188CI (All versions > V1.1 and < V1.3.2) SIMATIC RF360R (All versions < V2.0) SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0) SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0) SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0) SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0) SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0) SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0) SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0) SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0) SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0) SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0) SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0) SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0) SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0) SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0) SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0) SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0) SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0) SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5