Vulnerability-Lookup

FKIE_CVE-2021-20017

Vulnerability from fkie_nvd - Published: 2021-03-13 02:15 - Updated: 2026-06-17 03:33

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a 'nobody' user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.

References

	URL	Tags
	PSIRT@sonicwall.com	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004	Vendor Advisory

Impacted products

	Vendor	Product	Version
	sonicwall	sma100_firmware	*
	sonicwall	sma100	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "SMA100",
          "vendor": "SonicWall",
          "versions": [
            {
              "status": "affected",
              "version": "10.2.0.5 and earlier"
            }
          ]
        }
      ],
      "source": "PSIRT@sonicwall.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma100_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CDC143C4-3155-4DEF-9D80-BE14FD2295E9",
              "versionEndIncluding": "10.2.0.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma100:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "8E4A2B7B-40F5-4AE0-ACC7-E94B82435DBA",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a \u0027nobody\u0027 user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de inyecci\u00f3n de comandos posterior a la autenticaci\u00f3n en SonicWall SMA100, permite a un atacante autenticado ejecutar comandos del Sistema Operativo como un usuario \"nobody\".\u0026#xa0;Esta vulnerabilidad afecta a SMA100 versiones 10.2.0.5 y anteriores"
    }
  ],
  "id": "CVE-2021-20017",
  "lastModified": "2026-06-17T03:33:09.013",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-13T02:15:12.563",
  "references": [
    {
      "source": "PSIRT@sonicwall.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004"
    }
  ],
  "sourceIdentifier": "PSIRT@sonicwall.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "PSIRT@sonicwall.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-20017 (GCVE-0-2021-20017)

Vulnerability from cvelistv5 – Published: 2021-03-13 02:10 – Updated: 2024-08-03 17:30

Summary

Severity

No CVSS data available.

CWE

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

Assigner

sonicwall mitre root

References

1 reference

URL	Tags
https://psirt.global.sonicwall.com/vuln-detail/SN…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
SonicWall	SMA100	Affected: 10.2.0.5 and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:30:07.198Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "SMA100",
          "vendor": "SonicWall",
          "versions": [
            {
              "status": "affected",
              "version": "10.2.0.5 and earlier"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a \u0027nobody\u0027 user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier."
        }
      ],
      "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": "2021-03-13T02:10:14.000Z",
        "orgId": "44b2ff79-1416-4492-88bb-ed0da00c7315",
        "shortName": "sonicwall"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "PSIRT@sonicwall.com",
          "ID": "CVE-2021-20017",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "SMA100",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "10.2.0.5 and earlier"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "SonicWall"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "lang": "eng",
              "value": "A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a \u0027nobody\u0027 user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier."
            }
          ]
        },
        "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://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004",
              "refsource": "CONFIRM",
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0004"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "44b2ff79-1416-4492-88bb-ed0da00c7315",
    "assignerShortName": "sonicwall",
    "cveId": "CVE-2021-20017",
    "datePublished": "2021-03-13T02:10:14.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:30:07.198Z",
    "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.

Detection rules are retrieved from Rulezet.

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.