CVE-2021-33737

2021-09-1410:47:38

CWE-119

siemens

www.cve.org

simatic cp devices

denial of service

vulnerability

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

42.5%

JSON

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.

CNA Affected

[
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 343-1 (incl. SIPLUS variants)",
    "versions": [
      {
        "version": "All versions",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)",
    "versions": [
      {
        "version": "All versions",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 343-1 ERPC",
    "versions": [
      {
        "version": "All versions",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 343-1 Lean (incl. SIPLUS variants)",
    "versions": [
      {
        "version": "All versions",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 443-1",
    "versions": [
      {
        "version": "All versions < V3.3",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 443-1",
    "versions": [
      {
        "version": "All versions < V3.3",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC CP 443-1 Advanced",
    "versions": [
      {
        "version": "All versions < V3.3",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIPLUS NET CP 443-1",
    "versions": [
      {
        "version": "All versions < V3.3",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIPLUS NET CP 443-1 Advanced",
    "versions": [
      {
        "version": "All versions < V3.3",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]