CVE-2021-33737

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations.
Overview
  • CVE ID
  • CVE-2021-33737
  • Assigner
  • productcert@siemens.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-09-14T11:15:24
  • Last Modified Date
  • 2023-04-11T10:15:09
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:siemens:simatic_cp_343-1_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp343-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_cp_343-1_advanced_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp343-1_advanced:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_cp_343-1_erpc_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp_343-1_erpc:*:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp_343-1_lean:*:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_cp_443-1_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp_443-1:*:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_cp_443-1_advanced_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_cp_443-1_advanced:*:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-33737
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33737
History
Created Old Value New Value Data Type Notes
2022-05-08 06:20:28 Added to TrackCVE
2022-12-05 10:28:59 2021-09-14T11:15Z 2021-09-14T11:15:24 CVE Published Date updated
2022-12-05 10:28:59 2022-06-14T10:15:15 CVE Modified Date updated
2022-12-05 10:28:59 Modified Vulnerability Status updated
2023-04-11 12:11:06 2023-04-11T10:15:09 CVE Modified Date updated
2023-04-11 12:11:06 A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 Advanced (All versions), SIMATIC CP 443-1 Advanced (incl. SIPLUS variants) (All versions), SIPLUS NET CP 443-1 Advanced (All versions). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations. A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations. Description updated