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SiemensCVELIST:CVE-2021-40358

HistoryNov 09, 2021 - 11:32 a.m.

CVE-2021-40358

2021-11-0911:32:04

CWE-22

siemens

www.cve.org

simatic pcs 7

wincc

unauthorized file operations

web server vulnerability

CVSS3

9.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.4

Confidence

High

EPSS

0.001

Percentile

47.8%

JSON

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.

CNA Affected

[
  {
    "vendor": "Siemens",
    "product": "SIMATIC PCS 7 V8.2",
    "versions": [
      {
        "version": "All versions",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC PCS 7 V9.0",
    "versions": [
      {
        "version": "All versions < V9.0 SP3 UC04",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC PCS 7 V9.1",
    "versions": [
      {
        "version": "All versions < V9.1 SP1",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC WinCC V15 and earlier",
    "versions": [
      {
        "version": "All versions < V15 SP1 Update 7",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC WinCC V16",
    "versions": [
      {
        "version": "All versions < V16 Update 5",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC WinCC V17",
    "versions": [
      {
        "version": "All versions < V17 Update 2",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC WinCC V7.4",
    "versions": [
      {
        "version": "All versions < V7.4 SP1 Update 19",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC WinCC V7.5",
    "versions": [
      {
        "version": "All versions < V7.5 SP2 Update 5",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

References

cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf

CVSS3

9.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.4

Confidence

High

EPSS

0.001

Percentile

47.8%

JSON

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