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SchneiderCVE-2020-7566

HistoryNov 19, 2020 - 10:15 p.m.

CVE-2020-7566

2020-11-1922:15:15

CWE-334

schneider

web.nvd.nist.gov

cve-2020-7566

cwe-334

modicon m221

encryption keys

nvd

security vulnerability

CVSS2

4.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:A/AC:M/Au:N/C:P/I:P/A:N

CVSS3

7.3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

AI Score

Confidence

High

EPSS

0.001

Percentile

25.1%

JSON

A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

Affected configurations

Nvd

Node

schneider-electricmodicon_m221_firmwareMatch-

AND

schneider-electricmodicon_m221Match-

VendorProductVersionCPE
schneider-electricmodicon_m221_firmware-cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*
schneider-electricmodicon_m221-cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
schneider-electric	modicon_m221_firmware	-	cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:::::::*
schneider-electric	modicon_m221	-	cpe:2.3:h:schneider-electric:modicon_m221:-:::::::*

CNA Affected

[
  {
    "product": "Modicon M221, all references, all versions",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Modicon M221, all references, all versions"
      }
    ]
  }
]

References

us-cert.cisa.gov/ics/advisories/icsa-20-343-04

www.se.com/ww/en/download/document/SEVD-2020-315-05/

Social References

CVSS2

4.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:A/AC:M/Au:N/C:P/I:P/A:N

CVSS3

7.3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

AI Score

Confidence

High

EPSS

0.001

Percentile

25.1%

JSON

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