GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2020-24439 (GCVE-0-2020-24439)

Vulnerability from cvelistv5 – Published: 2020-11-05 19:32 – Updated: 2024-09-17 00:42
VLAI
Title
Acrobat Reader DC for macOS Signature Validation Bypass
Summary
Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature (CWE-347)
References
Impacted products
Vendor Product Version CPE status
Adobe Acrobat Reader Affected: unspecified , ≤ 2017.011.30175 (custom)
Affected: unspecified , ≤ 2020.012.20048 (custom)
Affected: unspecified , ≤ 2020.001.30005 (custom)
Affected: unspecified , ≤ None (custom)
guessed Create a notification for this product.
Date Public
2020-11-03 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:12:08.980Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Acrobat Reader",
          "vendor": "Adobe",
          "versions": [
            {
              "lessThanOrEqual": "2017.011.30175",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2020.012.20048",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2020.001.30005",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "None",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2020-11-03T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 2.8,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "Improper Verification of Cryptographic Signature (CWE-347)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-11T17:31:01.000Z",
        "orgId": "078d4453-3bcd-4900-85e6-15281da43538",
        "shortName": "adobe"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Acrobat Reader DC for macOS Signature Validation Bypass",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@adobe.com",
          "DATE_PUBLIC": "2020-11-03T23:00:00.000Z",
          "ID": "CVE-2020-24439",
          "STATE": "PUBLIC",
          "TITLE": "Acrobat Reader DC for macOS Signature Validation Bypass"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Acrobat Reader",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2017.011.30175"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2020.012.20048"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2020.001.30005"
                          },
                          {
                            "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": "Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "Low",
            "attackVector": "Local",
            "availabilityImpact": "None",
            "baseScore": 2.2,
            "baseSeverity": "Low",
            "confidentialityImpact": "None",
            "integrityImpact": "Low",
            "privilegesRequired": "Low",
            "scope": "Unchanged",
            "userInteraction": "Required",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Verification of Cryptographic Signature (CWE-347)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html",
              "refsource": "MISC",
              "url": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html"
            }
          ]
        },
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
    "assignerShortName": "adobe",
    "cveId": "CVE-2020-24439",
    "datePublished": "2020-11-05T19:32:50.010Z",
    "dateReserved": "2020-08-19T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:42:15.886Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-24439",
      "date": "2026-09-16",
      "epss": "0.00638",
      "percentile": "0.48905"
    },
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*\", \"versionEndIncluding\": \"20.001.30005\", \"matchCriteriaId\": \"FFF9FEEB-BA17-484C-BC81-A19A5363F06F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*\", \"versionEndIncluding\": \"17.011.30175\", \"matchCriteriaId\": \"F942D471-C285-496A-908B-45E5BCC66B50\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*\", \"versionEndIncluding\": \"20.012.20048\", \"matchCriteriaId\": \"5D8BEE5A-4D08-4EC1-8126-5ADDF8E315BE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*\", \"versionEndIncluding\": \"20.001.30005\", \"matchCriteriaId\": \"35912D0F-9492-47B3-A1B8-6D88115FF599\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*\", \"versionEndIncluding\": \"17.011.30175\", \"matchCriteriaId\": \"FF5AF6C5-A98F-4A45-A757-E652B7A1F5AB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*\", \"versionEndIncluding\": \"20.012.20048\", \"matchCriteriaId\": \"FD0E32F7-E377-41D5-A10C-5EB041FD02D4\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"387021A0-AF36-463C-A605-32EA7DAC172E\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.\"}, {\"lang\": \"es\", \"value\": \"Acrobat Reader DC para macOS versiones 2020.012.20048 (y anteriores), 2020.001.30005 (y anteriores) y 2017.011.30175 (y anteriores) est\\u00e1n afectados por una omisi\\u00f3n de la caracter\\u00edstica de seguridad.\u0026#xa0;Si bien el impacto pr\\u00e1ctico en la seguridad es m\\u00ednimo, ha sido implementada una soluci\\u00f3n de defensa en profundidad para fortalecer a\\u00fan m\\u00e1s el proceso de actualizaci\\u00f3n de Adobe Reader\"}]",
      "id": "CVE-2020-24439",
      "lastModified": "2024-11-21T05:14:49.747",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"psirt@adobe.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N\", \"baseScore\": 2.8, \"baseSeverity\": \"LOW\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.3, \"impactScore\": 1.4}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N\", \"baseScore\": 2.8, \"baseSeverity\": \"LOW\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.3, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:H/Au:N/C:N/I:P/A:N\", \"baseScore\": 1.2, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"HIGH\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"LOW\", \"exploitabilityScore\": 1.9, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2020-11-05T20:15:17.037",
      "references": "[{\"url\": \"https://helpx.adobe.com/security/products/acrobat/apsb20-67.html\", \"source\": \"psirt@adobe.com\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://helpx.adobe.com/security/products/acrobat/apsb20-67.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}]",
      "sourceIdentifier": "psirt@adobe.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"psirt@adobe.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-347\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-24439\",\"sourceIdentifier\":\"psirt@adobe.com\",\"published\":\"2020-11-05T20:15:17.037\",\"lastModified\":\"2024-11-21T05:14:49.747\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.\"},{\"lang\":\"es\",\"value\":\"Acrobat Reader DC para macOS versiones 2020.012.20048 (y anteriores), 2020.001.30005 (y anteriores) y 2017.011.30175 (y anteriores) est\u00e1n afectados por una omisi\u00f3n de la caracter\u00edstica de seguridad.\u0026#xa0;Si bien el impacto pr\u00e1ctico en la seguridad es m\u00ednimo, ha sido implementada una soluci\u00f3n de defensa en profundidad para fortalecer a\u00fan m\u00e1s el proceso de actualizaci\u00f3n de Adobe Reader\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@adobe.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N\",\"baseScore\":2.8,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.3,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N\",\"baseScore\":2.8,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.3,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:H/Au:N/C:N/I:P/A:N\",\"baseScore\":1.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"HIGH\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":1.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"psirt@adobe.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*\",\"versionEndIncluding\":\"20.001.30005\",\"matchCriteriaId\":\"FFF9FEEB-BA17-484C-BC81-A19A5363F06F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*\",\"versionEndIncluding\":\"17.011.30175\",\"matchCriteriaId\":\"F942D471-C285-496A-908B-45E5BCC66B50\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*\",\"versionEndIncluding\":\"20.012.20048\",\"matchCriteriaId\":\"5D8BEE5A-4D08-4EC1-8126-5ADDF8E315BE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*\",\"versionEndIncluding\":\"20.001.30005\",\"matchCriteriaId\":\"35912D0F-9492-47B3-A1B8-6D88115FF599\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*\",\"versionEndIncluding\":\"17.011.30175\",\"matchCriteriaId\":\"FF5AF6C5-A98F-4A45-A757-E652B7A1F5AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*\",\"versionEndIncluding\":\"20.012.20048\",\"matchCriteriaId\":\"FD0E32F7-E377-41D5-A10C-5EB041FD02D4\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}],\"references\":[{\"url\":\"https://helpx.adobe.com/security/products/acrobat/apsb20-67.html\",\"source\":\"psirt@adobe.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://helpx.adobe.com/security/products/acrobat/apsb20-67.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}"
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…