CVE-2020-6821 (GCVE-0-2020-6821)

Vulnerability from cvelistv5 – Published: 2020-04-24 15:55 – Updated: 2024-08-04 09:11
VLAI?
Summary
When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
Severity ?
No CVSS data available.
CWE
  • Uninitialized memory could be read when using the WebGL copyTexSubImage method
Assigner
References
Impacted products
Vendor Product Version
Mozilla Thunderbird Affected: unspecified , < 68.7.0 (custom)
Create a notification for this product.
    Mozilla Firefox ESR Affected: unspecified , < 68.7 (custom)
Create a notification for this product.
    Mozilla Firefox Affected: unspecified , < 75 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:11:05.018Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-13/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-12/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-14/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1625404"
          },
          {
            "name": "USN-4335-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4335-1/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "68.7.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "68.7",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "75",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When reading from areas partially or fully outside the source resource with WebGL\u0027s \u003ccode\u003ecopyTexSubImage\u003c/code\u003e method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird \u003c 68.7.0, Firefox ESR \u003c 68.7, and Firefox \u003c 75."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Uninitialized memory could be read when using the WebGL copyTexSubImage method",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-04-29T02:07:01",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.mozilla.org/security/advisories/mfsa2020-13/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.mozilla.org/security/advisories/mfsa2020-12/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.mozilla.org/security/advisories/mfsa2020-14/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1625404"
        },
        {
          "name": "USN-4335-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4335-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@mozilla.org",
          "ID": "CVE-2020-6821",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Thunderbird",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "68.7.0"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Firefox ESR",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "68.7"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Firefox",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "75"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Mozilla"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "When reading from areas partially or fully outside the source resource with WebGL\u0027s \u003ccode\u003ecopyTexSubImage\u003c/code\u003e method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird \u003c 68.7.0, Firefox ESR \u003c 68.7, and Firefox \u003c 75."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Uninitialized memory could be read when using the WebGL copyTexSubImage method"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.mozilla.org/security/advisories/mfsa2020-13/",
              "refsource": "MISC",
              "url": "https://www.mozilla.org/security/advisories/mfsa2020-13/"
            },
            {
              "name": "https://www.mozilla.org/security/advisories/mfsa2020-12/",
              "refsource": "MISC",
              "url": "https://www.mozilla.org/security/advisories/mfsa2020-12/"
            },
            {
              "name": "https://www.mozilla.org/security/advisories/mfsa2020-14/",
              "refsource": "MISC",
              "url": "https://www.mozilla.org/security/advisories/mfsa2020-14/"
            },
            {
              "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1625404",
              "refsource": "MISC",
              "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1625404"
            },
            {
              "name": "USN-4335-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4335-1/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2020-6821",
    "datePublished": "2020-04-24T15:55:25",
    "dateReserved": "2020-01-10T00:00:00",
    "dateUpdated": "2024-08-04T09:11:05.018Z",
    "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:mozilla:firefox:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"75.0\", \"matchCriteriaId\": \"925D894A-1609-43FB-94FE-84B3EAB9CE72\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"68.7.0\", \"matchCriteriaId\": \"D5D6475F-6C46-4BF0-B372-900A5B9FAED5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"68.7.0\", \"matchCriteriaId\": \"CF7AEB5A-A52E-45E7-AFBF-546C351A4915\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"When reading from areas partially or fully outside the source resource with WebGL\u0027s \u003ccode\u003ecopyTexSubImage\u003c/code\u003e method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird \u003c 68.7.0, Firefox ESR \u003c 68.7, and Firefox \u003c 75.\"}, {\"lang\": \"es\", \"value\": \"Cuando se lee desde \\u00e1reas parcial o completamente fuera del recurso fuente con el m\\u00e9todo \u003ccode\u003ecopyTexSubImage\u003c/code\u003e de WebGL, la especificaci\\u00f3n requiere que los valores devueltos sean cero. Anteriormente, esta memoria no fue inicializada, conllevando a una divulgaci\\u00f3n de datos potencialmente confidenciales. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.7.0, Firefox ESR versiones anteriores a 68.7 y Firefox versiones anteriores a 75.\"}]",
      "id": "CVE-2020-6821",
      "lastModified": "2024-11-21T05:36:14.410",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:N/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2020-04-24T16:15:13.510",
      "references": "[{\"url\": \"https://bugzilla.mozilla.org/show_bug.cgi?id=1625404\", \"source\": \"security@mozilla.org\", \"tags\": [\"Issue Tracking\", \"Permissions Required\"]}, {\"url\": \"https://usn.ubuntu.com/4335-1/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-12/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-13/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-14/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://bugzilla.mozilla.org/show_bug.cgi?id=1625404\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Permissions Required\"]}, {\"url\": \"https://usn.ubuntu.com/4335-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-12/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-13/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2020-14/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "security@mozilla.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-908\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-6821\",\"sourceIdentifier\":\"security@mozilla.org\",\"published\":\"2020-04-24T16:15:13.510\",\"lastModified\":\"2024-11-21T05:36:14.410\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"When reading from areas partially or fully outside the source resource with WebGL\u0027s \u003ccode\u003ecopyTexSubImage\u003c/code\u003e method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird \u003c 68.7.0, Firefox ESR \u003c 68.7, and Firefox \u003c 75.\"},{\"lang\":\"es\",\"value\":\"Cuando se lee desde \u00e1reas parcial o completamente fuera del recurso fuente con el m\u00e9todo \u003ccode\u003ecopyTexSubImage\u003c/code\u003e de WebGL, la especificaci\u00f3n requiere que los valores devueltos sean cero. Anteriormente, esta memoria no fue inicializada, conllevando a una divulgaci\u00f3n de datos potencialmente confidenciales. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.7.0, Firefox ESR versiones anteriores a 68.7 y Firefox versiones anteriores a 75.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-908\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"75.0\",\"matchCriteriaId\":\"925D894A-1609-43FB-94FE-84B3EAB9CE72\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"68.7.0\",\"matchCriteriaId\":\"D5D6475F-6C46-4BF0-B372-900A5B9FAED5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"68.7.0\",\"matchCriteriaId\":\"CF7AEB5A-A52E-45E7-AFBF-546C351A4915\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1625404\",\"source\":\"security@mozilla.org\",\"tags\":[\"Issue Tracking\",\"Permissions Required\"]},{\"url\":\"https://usn.ubuntu.com/4335-1/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-12/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-13/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-14/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1625404\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Permissions Required\"]},{\"url\":\"https://usn.ubuntu.com/4335-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-12/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-13/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2020-14/\",\"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.