CVE-2020-8335 (GCVE-0-2020-8335)

Vulnerability from cvelistv5 – Published: 2020-09-01 21:30 – Updated: 2024-09-16 18:04
VLAI
Summary
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access.
Severity
6.1 (Medium)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE
  • unauthorized access
Assigner
lenovo CNA
References
Impacted products
Vendor Product Version
Lenovo ThinkPad A285 BIOS Affected: unspecified , < r0xuj70w (custom)
Create a notification for this product.
Lenovo ThinkPad A485 BIOS Affected: unspecified , < r0wuj65w (custom)
Create a notification for this product.
Lenovo ThinkPad T495 BIOS Affected: unspecified , < r12uj55w (custom)
Create a notification for this product.
Lenovo ThinkPad T495s/X395 BIOS Affected: unspecified , < r13uj47w (custom)
Create a notification for this product.
Date Public
2020-09-01 00:00
Credits
Lenovo thanks Zoltan Harmath for reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:56:28.331Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.lenovo.com/us/en/product_security/LEN-30042"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ThinkPad A285 BIOS",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "r0xuj70w",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "ThinkPad A485 BIOS",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "r0wuj65w",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "ThinkPad T495 BIOS",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "r12uj55w",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "ThinkPad T495s/X395 BIOS",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "r13uj47w",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Lenovo thanks Zoltan Harmath for reporting this issue."
        }
      ],
      "datePublic": "2020-09-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "unauthorized access",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-09-01T21:30:16.000Z",
        "orgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
        "shortName": "lenovo"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.lenovo.com/us/en/product_security/LEN-30042"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update BIOS to the following BIOS versions (or later): Lenovo ThinkPad A285: r0xuj70w ; A485: r0wuj65w ; T495: r12uj55w ; T495s/X395: r13uj47w"
        }
      ],
      "source": {
        "advisory": "LEN-30042",
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@lenovo.com",
          "DATE_PUBLIC": "2020-09-01T21:00:00.000Z",
          "ID": "CVE-2020-8335",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "ThinkPad A285 BIOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "r0xuj70w"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "ThinkPad A485 BIOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "r0wuj65w"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "ThinkPad T495 BIOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "r12uj55w"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "ThinkPad T495s/X395 BIOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "r13uj47w"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Lenovo"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Lenovo thanks Zoltan Harmath for reporting this issue."
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "unauthorized access"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.lenovo.com/us/en/product_security/LEN-30042",
              "refsource": "MISC",
              "url": "https://support.lenovo.com/us/en/product_security/LEN-30042"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Update BIOS to the following BIOS versions (or later): Lenovo ThinkPad A285: r0xuj70w ; A485: r0wuj65w ; T495: r12uj55w ; T495s/X395: r13uj47w"
          }
        ],
        "source": {
          "advisory": "LEN-30042",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
    "assignerShortName": "lenovo",
    "cveId": "CVE-2020-8335",
    "datePublished": "2020-09-01T21:30:16.224Z",
    "dateReserved": "2020-01-28T00:00:00.000Z",
    "dateUpdated": "2024-09-16T18:04:17.802Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.