CVE-2021-21100 (GCVE-0-2021-21100)

Vulnerability from cvelistv5 – Published: 2021-04-15 13:51 – Updated: 2025-04-23 19:42
VLAI?
Summary
Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-379 - Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)
Assigner
References
Impacted products
Vendor Product Version
Adobe Digital Editions Affected: unspecified , ≤ 4.5.11.187245 (custom)
Affected: unspecified , ≤ None (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:01:13.275Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-21100",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:19:24.332536Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T19:42:18.061Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Digital Editions",
          "vendor": "Adobe",
          "versions": [
            {
              "lessThanOrEqual": "4.5.11.187245",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "None",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-04-13T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-379",
              "description": "Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-15T13:51:28.000Z",
        "orgId": "078d4453-3bcd-4900-85e6-15281da43538",
        "shortName": "adobe"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Adobe Digital Editions Arbitrary file system write vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@adobe.com",
          "DATE_PUBLIC": "2021-04-13T23:00:00.000Z",
          "ID": "CVE-2021-21100",
          "STATE": "PUBLIC",
          "TITLE": "Adobe Digital Editions Arbitrary file system write vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Digital Editions",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "4.5.11.187245"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "None"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "None"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "None"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Adobe"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "None",
            "attackVector": "None",
            "availabilityImpact": "None",
            "baseScore": 7.8,
            "baseSeverity": "High",
            "confidentialityImpact": "None",
            "integrityImpact": "None",
            "privilegesRequired": "None",
            "scope": "None",
            "userInteraction": "None",
            "vectorString": "AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html",
              "refsource": "MISC",
              "url": "https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html"
            }
          ]
        },
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
    "assignerShortName": "adobe",
    "cveId": "CVE-2021-21100",
    "datePublished": "2021-04-15T13:51:28.016Z",
    "dateReserved": "2020-12-18T00:00:00.000Z",
    "dateUpdated": "2025-04-23T19:42:18.061Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:digital_editions:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"4.5.11.187245\", \"matchCriteriaId\": \"F9A36F61-8290-40CD-8F7D-ECE48CF6B7F5\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"387021A0-AF36-463C-A605-32EA7DAC172E\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\"}, {\"lang\": \"es\", \"value\": \"Adobe Digital Editions versi\\u00f3n 4.5.11.187245 (y anteriores) est\\u00e1 afectada por una vulnerabilidad de escalada de privilegios durante la instalaci\\u00f3n.\u0026#xa0;Un atacante no autenticado podr\\u00eda aprovechar esta vulnerabilidad para lograr una escritura arbitraria del sistema de archivos en el contexto del usuario actual.\u0026#xa0;Es requerida una interacci\\u00f3n del usuario para explotar este problema, ya que la v\\u00edctima debe abrir un archivo malicioso\"}]",
      "id": "CVE-2021-21100",
      "lastModified": "2024-11-21T05:47:34.003",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"psirt@adobe.com\", \"type\": \"Secondary\", \"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:N/AC:M/Au:N/C:P/I:P/A:P\", \"baseScore\": 6.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2021-04-15T14:15:16.747",
      "references": "[{\"url\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"source\": \"psirt@adobe.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "psirt@adobe.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"psirt@adobe.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-379\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-21100\",\"sourceIdentifier\":\"psirt@adobe.com\",\"published\":\"2021-04-15T14:15:16.747\",\"lastModified\":\"2024-11-21T05:47:34.003\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\"},{\"lang\":\"es\",\"value\":\"Adobe Digital Editions versi\u00f3n 4.5.11.187245 (y anteriores) est\u00e1 afectada por una vulnerabilidad de escalada de privilegios durante la instalaci\u00f3n.\u0026#xa0;Un atacante no autenticado podr\u00eda aprovechar esta vulnerabilidad para lograr una escritura arbitraria del sistema de archivos en el contexto del usuario actual.\u0026#xa0;Es requerida una interacci\u00f3n del usuario para explotar este problema, ya que la v\u00edctima debe abrir un archivo malicioso\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@adobe.com\",\"type\":\"Secondary\",\"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:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"psirt@adobe.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-379\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:digital_editions:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"4.5.11.187245\",\"matchCriteriaId\":\"F9A36F61-8290-40CD-8F7D-ECE48CF6B7F5\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"}]}]}],\"references\":[{\"url\":\"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\",\"source\":\"psirt@adobe.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T18:01:13.275Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-21100\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-23T13:19:24.332536Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-23T13:19:25.656Z\"}}], \"cna\": {\"title\": \"Adobe Digital Editions Arbitrary file system write vulnerability\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"Adobe\", \"product\": \"Digital Editions\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"4.5.11.187245\"}, {\"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"None\"}]}], \"datePublic\": \"2021-04-13T00:00:00.000Z\", \"references\": [{\"url\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-379\", \"description\": \"Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)\"}]}], \"providerMetadata\": {\"orgId\": \"078d4453-3bcd-4900-85e6-15281da43538\", \"shortName\": \"adobe\", \"dateUpdated\": \"2021-04-15T13:51:28.000Z\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": {\"scope\": \"None\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"None\", \"baseSeverity\": \"High\", \"vectorString\": \"AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"None\", \"userInteraction\": \"None\", \"attackComplexity\": \"None\", \"availabilityImpact\": \"None\", \"privilegesRequired\": \"None\", \"confidentialityImpact\": \"None\"}}, \"source\": {\"discovery\": \"EXTERNAL\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"4.5.11.187245\", \"version_affected\": \"\u003c=\"}, {\"version_value\": \"None\", \"version_affected\": \"\u003c=\"}, {\"version_value\": \"None\", \"version_affected\": \"\u003c=\"}, {\"version_value\": \"None\", \"version_affected\": \"\u003c=\"}]}, \"product_name\": \"Digital Editions\"}]}, \"vendor_name\": \"Adobe\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"name\": \"https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-21100\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Adobe Digital Editions Arbitrary file system write vulnerability\", \"ASSIGNER\": \"psirt@adobe.com\", \"DATE_PUBLIC\": \"2021-04-13T23:00:00.000Z\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-21100\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-23T19:42:18.061Z\", \"dateReserved\": \"2020-12-18T00:00:00.000Z\", \"assignerOrgId\": \"078d4453-3bcd-4900-85e6-15281da43538\", \"datePublished\": \"2021-04-15T13:51:28.016Z\", \"assignerShortName\": \"adobe\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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.