Vulnerability-Lookup

CNVD-2022-01689

Vulnerability from cnvd - Published: 2021-12-31

Title

ZyXEL GS1900访问控制错误漏洞

Description

Zyxel ZyXEL GS1900是中国台湾合勤（Zyxel）公司的一款管理型交换机。多款Zyxel产品中存在访问控制错误漏洞，该漏洞源于产品的TFTP客户端未对可执行系统命令的功能添加权限控制。攻击者可在登陆后通过该漏洞执行任意操作系统命令。

Severity

高

Patch Name

ZyXEL GS1900访问控制错误漏洞的补丁

Patch Description

Zyxel ZyXEL GS1900是中国台湾合勤（Zyxel）公司的一款管理型交换机。多款Zyxel产品中存在访问控制错误漏洞，该漏洞源于产品的TFTP客户端未对可执行系统命令的功能添加权限控制。攻击者可在登陆后通过该漏洞执行任意操作系统命令。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-35031

Impacted products

Name
['ZyXEL GS1900', 'ZyXEL XGS1250', 'ZyXEL XGS1210']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-35031"
    }
  },
  "description": "Zyxel ZyXEL GS1900\u662f\u4e2d\u56fd\u53f0\u6e7e\u5408\u52e4\uff08Zyxel\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7ba1\u7406\u578b\u4ea4\u6362\u673a\u3002\n\n\u591a\u6b3eZyxel\u4ea7\u54c1\u4e2d\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ea7\u54c1\u7684TFTP\u5ba2\u6237\u7aef\u672a\u5bf9\u53ef\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\u7684\u529f\u80fd\u6dfb\u52a0\u6743\u9650\u63a7\u5236\u3002\u653b\u51fb\u8005\u53ef\u5728\u767b\u9646\u540e\u901a\u8fc7\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u64cd\u4f5c\u7cfb\u7edf\u547d\u4ee4\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-01689",
  "openTime": "2021-12-31",
  "patchDescription": "Zyxel ZyXEL GS1900\u662f\u4e2d\u56fd\u53f0\u6e7e\u5408\u52e4\uff08Zyxel\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7ba1\u7406\u578b\u4ea4\u6362\u673a\u3002\r\n\r\n\u591a\u6b3eZyxel\u4ea7\u54c1\u4e2d\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ea7\u54c1\u7684TFTP\u5ba2\u6237\u7aef\u672a\u5bf9\u53ef\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\u7684\u529f\u80fd\u6dfb\u52a0\u6743\u9650\u63a7\u5236\u3002\u653b\u51fb\u8005\u53ef\u5728\u767b\u9646\u540e\u901a\u8fc7\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u64cd\u4f5c\u7cfb\u7edf\u547d\u4ee4\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": "ZyXEL GS1900\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ZyXEL GS1900",
      "ZyXEL XGS1250",
      "ZyXEL XGS1210"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-35031",
  "serverity": "\u9ad8",
  "submitTime": "2021-12-29",
  "title": "ZyXEL GS1900\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-35031 (GCVE-0-2021-35031)

Vulnerability from cvelistv5 – Published: 2021-12-28 10:36 – Updated: 2024-08-04 00:33

Summary

A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device.

Severity

6.8 (Medium)


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

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

Zyxel CNA under the mitre root

CNA scorecard C 67/100 over 15 records in the last 180 days details

References

1 reference

URL	Tags
https://www.zyxel.com/support/Zyxel_security_advi…	x_refsource_CONFIRM

Impacted products

3 products

Vendor	Product	Version
Zyxel	GS1900 series firmware	Affected: 2.60
Zyxel	XGS1210 series firmware	Affected: 1.00(ABTY.4)C0
Zyxel	XGS1250 series firmware	Affected: 1.00(ABWE.0)C0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:33:49.873Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GS1900 series firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "2.60"
            }
          ]
        },
        {
          "product": "XGS1210 series firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "1.00(ABTY.4)C0"
            }
          ]
        },
        {
          "product": "XGS1250 series firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "1.00(ABWE.0)C0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-28T16:05:43.000Z",
        "orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
        "shortName": "Zyxel"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@zyxel.com.tw",
          "ID": "CVE-2021-35031",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "GS1900 series firmware",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "2.60"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "XGS1210 series firmware",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "1.00(ABTY.4)C0"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "XGS1250 series firmware",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "1.00(ABWE.0)C0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Zyxel"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device."
            }
          ]
        },
        "impact": {
          "cvss": {
            "baseScore": "6.8",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml",
              "refsource": "CONFIRM",
              "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
    "assignerShortName": "Zyxel",
    "cveId": "CVE-2021-35031",
    "datePublished": "2021-12-28T10:36:23.000Z",
    "dateReserved": "2021-06-17T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:33:49.873Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2022-01689

CVE-2021-35031 (GCVE-0-2021-35031)

Tags

Sightings

Nomenclature

Related by attack behaviour