CVE-2021-37186

A vulnerability has been identified in LOGO! CMR2020 (All versions < V2.2), LOGO! CMR2040 (All versions < V2.2), SIMATIC RTU 3000 family (All versions). 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:*:*:*:*:*:*:*:*

Information

Published : 2021-09-14 04:15

Updated : 2021-09-24 06:48


NVD link : CVE-2021-37186

Mitre link : CVE-2021-37186


JSON object : View

CWE
CWE-330

Use of Insufficiently Random Values

Products Affected

siemens

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