Vulnerability-Lookup

JVNDB-2021-000061

Vulnerability from jvndb - Published: 2021-07-05 05:28 - Updated:2021-07-05 05:28

Severity

5.4 (Medium) - cvssV3_0 - CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Summary

A-Stage SCT-40CM01SR and AT-40CM01SR vulnerable to authentication bypass

Details

SCT-40CM01SR and AT-40CM01SR provided by A-Stage Inc. are liquid crystal televisions. SCT-40CM01SR and AT-40CM01SR contain an authentication bypass vulnerability (CWE-287). Shinnosuke Tokusho reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN21636825/index.html
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20776
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20776
	Improper Authentication(CWE-287)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

	A-Stage Inc.	AT-40CM01SR
	A-Stage Inc.	SCT-40CM01SR

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000061.html",
  "dc:date": "2021-07-05T14:28+09:00",
  "dcterms:issued": "2021-07-05T14:28+09:00",
  "dcterms:modified": "2021-07-05T14:28+09:00",
  "description": "SCT-40CM01SR and AT-40CM01SR provided by A-Stage Inc. are liquid crystal televisions. SCT-40CM01SR and AT-40CM01SR contain an authentication bypass vulnerability (CWE-287).\r\n\r\nShinnosuke Tokusho reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000061.html",
  "sec:cpe": [
    {
      "#text": "cpe:/o:a-stage-inc:at-40cm01sr_firmware",
      "@product": "AT-40CM01SR",
      "@vendor": "A-Stage Inc.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:a-stage-inc:sct-40cm01sr_firmware",
      "@product": "SCT-40CM01SR",
      "@vendor": "A-Stage Inc.",
      "@version": "2.2"
    }
  ],
  "sec:cvss": [
    {
      "@score": "4.8",
      "@severity": "Medium",
      "@type": "Base",
      "@vector": "AV:A/AC:L/Au:N/C:P/I:P/A:N",
      "@version": "2.0"
    },
    {
      "@score": "5.4",
      "@severity": "Medium",
      "@type": "Base",
      "@vector": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "@version": "3.0"
    }
  ],
  "sec:identifier": "JVNDB-2021-000061",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN21636825/index.html",
      "@id": "JVN#21636825",
      "@source": "JVN"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20776",
      "@id": "CVE-2021-20776",
      "@source": "CVE"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20776",
      "@id": "CVE-2021-20776",
      "@source": "NVD"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-287",
      "@title": "Improper Authentication(CWE-287)"
    }
  ],
  "title": "A-Stage SCT-40CM01SR and AT-40CM01SR vulnerable to authentication bypass"
}

CVE-2021-20776 (GCVE-0-2021-20776)

Vulnerability from cvelistv5 – Published: 2021-07-07 07:05 – Updated: 2024-08-03 17:53

Summary

Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet.

Severity

No CVSS data available.

CWE

Improper Authentication

Assigner

jpcert jpcert root Scorecard

References

1 reference

URL	Tags
https://jvn.jp/en/jp/JVN21636825/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
A-Stage Inc.	SCT-40CM01SR and AT-40CM01SR	Affected: all versions

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:53:22.094Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/jp/JVN21636825/index.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "SCT-40CM01SR and AT-40CM01SR",
          "vendor": "A-Stage Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Improper Authentication",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-07T07:05:27.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jvn.jp/en/jp/JVN21636825/index.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2021-20776",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "SCT-40CM01SR and AT-40CM01SR",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "all versions"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "A-Stage Inc."
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Authentication"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://jvn.jp/en/jp/JVN21636825/index.html",
              "refsource": "MISC",
              "url": "https://jvn.jp/en/jp/JVN21636825/index.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2021-20776",
    "datePublished": "2021-07-07T07:05:28.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:53:22.094Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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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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JVNDB-2021-000061

CVE-2021-20776 (GCVE-0-2021-20776)

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