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CVE-2021-37205

High

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.

SeverityHigh
CVSS7.5
Exploit probability—
ProductSiemens Simatic Drive Controller Cpu 1504d Tf Firmware
PublishedFeb 9, 2022
First seenFeb 9, 2022
Weakness typeCWE-401CWE-401

How to fix

Update
  • siemens simatic_drive_controller_cpu_1504d_tf_firmware2.9.4 or later
  • siemens simatic_drive_controller_cpu_1507d_tf_firmware2.9.4 or later
  • siemens simatic_s7-plcsim_advanced_firmware4.0 or later
  • siemens simatic_s7-1200_cpu_1211c_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1212c_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1212fc_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1214fc_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1214c_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1215fc_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1215c_firmware4.5.2 or later
  • siemens simatic_s7-1200_cpu_1217c_firmware4.5.2 or later
  • siemens simatic_s7-1500_cpu_1510sp-1_firmware2.9.4 or later

Affected products

ProductAffected versionsFixed in
siemens simatic_drive_controller_cpu_1504d_tf_firmwarev < 2.9.42.9.4
siemens simatic_drive_controller_cpu_1507d_tf_firmwarev < 2.9.42.9.4
siemens simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmwareNo range specified—
siemens simatic_s7-plcsim_advanced_firmwarev < 4.0, 4.04.0
siemens tim_1531_irc_firmware2.2 ≤ v—
siemens simatic_s7-1500_software_controllerNo range specified—
siemens simatic_s7-1200_cpu_1211c_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1212c_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1212fc_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1214fc_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1214c_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1215fc_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1215c_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1200_cpu_1217c_firmware4.5.0 ≤ v < 4.5.24.5.2
siemens simatic_s7-1500_cpu_1510sp-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1510sp_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1511-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1511c-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1511f-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1511t-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1511tf-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1512c-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1512sp-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1512spf-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1513-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1513f-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1513r-1_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_cpu_1513prof-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_cpu_1513pro-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1515-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1515f-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1515r-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1515t-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1515tf-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516pro_f_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516pro-2_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516f-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516t-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1516tf-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1517-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1517f-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1517tf-3_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1518-4_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1518f-4_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1518hf-4_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1518t-4_firmware2.9.2 ≤ v < 2.9.42.9.4
siemens simatic_s7-1500_cpu_1518tf-4_firmware2.9.2 ≤ v < 2.9.42.9.4

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CVE-2021-37205 · Siemens Simatic Drive Controller Cpu 1504d Tf Firmware · Dark Radar