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IcscertCVE-2021-27500

HistoryMay 12, 2022 - 8:15 p.m.

CVE-2021-27500

2022-05-1220:15:13

CWE-617

icscert

web.nvd.nist.gov

cve-2021-27500

denial of service

eipstackgroup

opener

ethernet/ip

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

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

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

35.2%

JSON

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.

Affected configurations

Nvd

Node

opener_projectopenerRange≤2.3

VendorProductVersionCPE
opener_projectopener*cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
opener_project	opener	*	cpe:2.3:a:opener_project:opener::::::::

CNA Affected

[
  {
    "product": "OpENer EtherNet/IP",
    "vendor": "EIPStackGroup",
    "versions": [
      {
        "lessThan": "Feb 10, 2021",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

github.com/EIPStackGroup/OpENer

www.cisa.gov/uscert/ics/advisories/icsa-21-105-02

Social References

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

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

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

35.2%

JSON

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