CVE-2021-37186

A vulnerability has been identified in LOGO! CMR2020 (All versions < V2.2), LOGO! CMR2040 (All versions < V2.2), SIMATIC RTU3010C (All versions < V4.0.9), SIMATIC RTU3030C (All versions < V4.0.9), SIMATIC RTU3031C (All versions < V4.0.9), SIMATIC RTU3041C (All versions < V4.0.9). The underlying TCP/IP stack does not properly calculate the random numbers used as ISN (Initial Sequence Numbers). An adjacent attacker with network access to the LAN interface could interfere with traffic, spoof the connection and gain access to sensitive information.
References
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:siemens:logo\!_cmr2020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:logo\!_cmr2020:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:siemens:logo\!_cmr2040_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:logo\!_cmr2040:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:siemens:simatic_rtu3010c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:simatic_rtu3010c:*:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:siemens:simatic_rtu3030c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:simatic_rtu3030c:*:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:siemens:simatic_rtu3031c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:simatic_rtu3031c:*:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:siemens:simatic_rtu3041c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:simatic_rtu3041c:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-09-14 11:15

Updated : 2024-02-28 18:48


NVD link : CVE-2021-37186

Mitre link : CVE-2021-37186

CVE.ORG link : CVE-2021-37186


JSON object : View

Products Affected

siemens

  • simatic_rtu3010c_firmware
  • simatic_rtu3041c
  • simatic_rtu3030c_firmware
  • simatic_rtu3010c
  • logo\!_cmr2020_firmware
  • logo\!_cmr2040
  • simatic_rtu3031c_firmware
  • simatic_rtu3041c_firmware
  • simatic_rtu3030c
  • simatic_rtu3031c
  • logo\!_cmr2020
  • logo\!_cmr2040_firmware
CWE
CWE-330

Use of Insufficiently Random Values