CVE-2021-42110 (GCVE-0-2021-42110)

Vulnerability from cvelistv5 – Published: 2021-12-08 15:42 – Updated: 2025-05-30 16:01
VLAI?
Summary
An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.
Severity ?
7.1 (High)
CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:22:26.016Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-30T16:01:45.661Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110"
        },
        {
          "url": "http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe"
        },
        {
          "url": "https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-42110"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-42110",
          "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 issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT",
            "availabilityImpact": "NONE",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110",
              "refsource": "MISC",
              "url": "https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110"
            },
            {
              "name": "http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe",
              "refsource": "MISC",
              "url": "http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-42110",
    "datePublished": "2021-12-08T15:42:31.000Z",
    "dateReserved": "2021-10-08T00:00:00.000Z",
    "dateUpdated": "2025-05-30T16:01:45.661Z",
    "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:allegro:allegro:*:*:*:*:*:windows:*:*\", \"versionEndExcluding\": \"3.3.4156.1\", \"matchCriteriaId\": \"4B00CAF2-2226-4D8E-910A-D6A0EE4E189D\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.\"}, {\"lang\": \"es\", \"value\": \"Se ha detectado un problema en Allegro Windows (anteriormente Popsy Windows) versiones anteriores a 3.3.4156.1. Un usuario est\\u00e1ndar puede escalar privilegios a SYSTEM si el m\\u00f3dulo FTP est\\u00e1 instalado, debido al secuestro de DLL\"}]",
      "id": "CVE-2021-42110",
      "lastModified": "2024-11-21T06:27:16.753",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"cve@mitre.org\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 4.2}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:H/Au:N/C:C/I:C/A:C\", \"baseScore\": 6.2, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"HIGH\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 1.9, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2021-12-08T16:15:07.147",
      "references": "[{\"url\": \"http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party 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-2021-42110\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-12-08T16:15:07.147\",\"lastModified\":\"2025-05-30T16:15:29.060\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.\"},{\"lang\":\"es\",\"value\":\"Se ha detectado un problema en Allegro Windows (anteriormente Popsy Windows) versiones anteriores a 3.3.4156.1. Un usuario est\u00e1ndar puede escalar privilegios a SYSTEM si el m\u00f3dulo FTP est\u00e1 instalado, debido al secuestro de DLL\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":4.2},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:H/Au:N/C:C/I:C/A:C\",\"baseScore\":6.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"HIGH\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":1.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"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:allegro:allegro:*:*:*:*:*:windows:*:*\",\"versionEndExcluding\":\"3.3.4156.1\",\"matchCriteriaId\":\"4B00CAF2-2226-4D8E-910A-D6A0EE4E189D\"}]}]}],\"references\":[{\"url\":\"http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-42110\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party 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.