CVE-2020-13657 (GCVE-0-2020-13657)

Vulnerability from cvelistv5 – Published: 2020-06-29 17:51 – Updated: 2024-08-04 12:25
VLAI?
Summary
An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:25:16.279Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://forum.avast.com/index.php?topic=234638.0"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://forum.avast.com/index.php?topic=232423.0"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2020-03-03T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-06-29T17:51:57",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://forum.avast.com/index.php?topic=234638.0"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://forum.avast.com/index.php?topic=232423.0"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-13657",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://forum.avast.com/index.php?topic=234638.0",
              "refsource": "CONFIRM",
              "url": "https://forum.avast.com/index.php?topic=234638.0"
            },
            {
              "name": "https://forum.avast.com/index.php?topic=232423.0",
              "refsource": "CONFIRM",
              "url": "https://forum.avast.com/index.php?topic=232423.0"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-13657",
    "datePublished": "2020-06-29T17:51:57",
    "dateReserved": "2020-05-28T00:00:00",
    "dateUpdated": "2024-08-04T12:25:16.279Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:avast:avg_antivirus:*:*:*:*:free:*:*:*\", \"versionEndExcluding\": \"20.4\", \"matchCriteriaId\": \"DAB05E52-87C5-4597-835F-8EB6C35759F9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:avast:free_antivirus:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"20.4\", \"matchCriteriaId\": \"3305B8C7-755C-4ADF-B95B-923EC073296B\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files.\"}, {\"lang\": \"es\", \"value\": \"Se presenta una vulnerabilidad de elevaci\\u00f3n de privilegios en Avast Free Antivirus y AVG AntiVirus Free versiones anteriores a 20.4, debido a un manejo inapropiado de los enlaces f\\u00edsicos. La vulnerabilidad permite a usuarios locales tomar el control de archivos arbitrarios\"}]",
      "id": "CVE-2020-13657",
      "lastModified": "2024-11-21T05:01:41.830",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:L/Au:N/C:N/I:P/A:N\", \"baseScore\": 2.1, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"LOW\", \"exploitabilityScore\": 3.9, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2020-06-29T18:15:11.643",
      "references": "[{\"url\": \"https://forum.avast.com/index.php?topic=232423.0\", \"source\": \"cve@mitre.org\", \"tags\": [\"Release Notes\", \"Vendor Advisory\"]}, {\"url\": \"https://forum.avast.com/index.php?topic=234638.0\", \"source\": \"cve@mitre.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://forum.avast.com/index.php?topic=232423.0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Release Notes\", \"Vendor Advisory\"]}, {\"url\": \"https://forum.avast.com/index.php?topic=234638.0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-13657\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-06-29T18:15:11.643\",\"lastModified\":\"2024-11-21T05:01:41.830\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files.\"},{\"lang\":\"es\",\"value\":\"Se presenta una vulnerabilidad de elevaci\u00f3n de privilegios en Avast Free Antivirus y AVG AntiVirus Free versiones anteriores a 20.4, debido a un manejo inapropiado de los enlaces f\u00edsicos. La vulnerabilidad permite a usuarios locales tomar el control de archivos arbitrarios\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":2.1,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:avast:avg_antivirus:*:*:*:*:free:*:*:*\",\"versionEndExcluding\":\"20.4\",\"matchCriteriaId\":\"DAB05E52-87C5-4597-835F-8EB6C35759F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:avast:free_antivirus:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"20.4\",\"matchCriteriaId\":\"3305B8C7-755C-4ADF-B95B-923EC073296B\"}]}]}],\"references\":[{\"url\":\"https://forum.avast.com/index.php?topic=232423.0\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://forum.avast.com/index.php?topic=234638.0\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://forum.avast.com/index.php?topic=232423.0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://forum.avast.com/index.php?topic=234638.0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.