Vulnerability-Lookup

CNVD-2021-34433

Vulnerability from cnvd - Published: 2021-05-14

Title

Rockwell Automation MicroLogix 1400缓冲区溢出漏洞

Description

Micrologix 1400是美国罗克韦尔（Rockwell Automation）公司推出的可编程逻辑控制器。 Rockwell Automation MicroLogix 1400 21.6及更早版本存在缓冲区溢出漏洞。攻击者可通过发送特制Modbus数据包利用该漏洞检索或修改寄存器中的随机值，从而可导致拒绝服务。

Severity

高

Patch Name

Rockwell Automation MicroLogix 1400缓冲区溢出漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://rockwellautomation.custhelp.com/

Reference

https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01

Impacted products

Name
Rockwell Automation MicroLogix 1400 <=21.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-22659",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-22659"
    }
  },
  "description": "Micrologix 1400\u662f\u7f8e\u56fd\u7f57\u514b\u97e6\u5c14\uff08Rockwell Automation\uff09\u516c\u53f8\u63a8\u51fa\u7684\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\u3002\n\nRockwell Automation MicroLogix 1400 21.6\u53ca\u66f4\u65e9\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236Modbus\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u68c0\u7d22\u6216\u4fee\u6539\u5bc4\u5b58\u5668\u4e2d\u7684\u968f\u673a\u503c\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://rockwellautomation.custhelp.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-34433",
  "openTime": "2021-05-14",
  "patchDescription": "Micrologix 1400\u662f\u7f8e\u56fd\u7f57\u514b\u97e6\u5c14\uff08Rockwell Automation\uff09\u516c\u53f8\u63a8\u51fa\u7684\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\u3002\r\n\r\nRockwell Automation MicroLogix 1400 21.6\u53ca\u66f4\u65e9\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236Modbus\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u68c0\u7d22\u6216\u4fee\u6539\u5bc4\u5b58\u5668\u4e2d\u7684\u968f\u673a\u503c\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Rockwell Automation MicroLogix 1400\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Rockwell Automation MicroLogix 1400 \u003c=21.6"
  },
  "referenceLink": "https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01",
  "serverity": "\u9ad8",
  "submitTime": "2021-02-03",
  "title": "Rockwell Automation MicroLogix 1400\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-22659 (GCVE-0-2021-22659)

Vulnerability from cvelistv5 – Published: 2021-03-25 15:59 – Updated: 2026-06-03 13:10

Summary

Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 13:09 UTC

CWE

CWE-120 - CLASSIC BUFFER OVERFLOW CWE-120

Assigner

icscert icscert root

References

2 references

URL	Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01	x_refsource_MISC
https://rockwellautomation.custhelp.com/app/answe…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Rockwell Automation MicroLogix 1400	Affected: MicroLogix 1400, All series Version 21.6 and below

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:51:07.020Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129877/loc/en_US#__highlight"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-22659",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T13:09:27.807640Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-03T13:10:07.459Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "product": "Rockwell Automation MicroLogix 1400",
          "vendor": "n/a",
          "versions": [
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            }
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "type": "CWE"
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      "providerMetadata": {
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        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
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          "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129877/loc/en_US#__highlight"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "ID": "CVE-2021-22659",
          "STATE": "PUBLIC"
        },
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                      }
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            }
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        "problemtype": {
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            },
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  },
  "cveMetadata": {
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    "datePublished": "2021-03-25T15:59:07.000Z",
    "dateReserved": "2021-01-05T00:00:00.000Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CNVD-2021-34433

CVE-2021-22659 (GCVE-0-2021-22659)

Tags

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Nomenclature

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