CVE-2020-6830 (GCVE-0-2020-6830)

Vulnerability from cvelistv5 – Published: 2020-05-26 17:06 – Updated: 2024-08-04 09:11
VLAI
Summary
For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token was being used for JS-to-native also, but it isn't needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS < 25.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • Native-to-JS bridging security token exploit
Assigner
mozilla CNA under the mitre root
CNA scorecard E 38/100 over 683 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Mozilla Firefox for iOS Affected: unspecified , < 25 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:11:05.047Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-15/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox for iOS",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "25",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can\u0027t call the bridging functions. That token was being used for JS-to-native also, but it isn\u0027t needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS \u003c 25."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Native-to-JS bridging security token exploit",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-05-26T17:06:52.000Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.mozilla.org/security/advisories/mfsa2020-15/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@mozilla.org",
          "ID": "CVE-2020-6830",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Firefox for iOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "25"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Mozilla"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can\u0027t call the bridging functions. That token was being used for JS-to-native also, but it isn\u0027t needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS \u003c 25."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Native-to-JS bridging security token exploit"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.mozilla.org/security/advisories/mfsa2020-15/",
              "refsource": "MISC",
              "url": "https://www.mozilla.org/security/advisories/mfsa2020-15/"
            },
            {
              "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387",
              "refsource": "MISC",
              "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2020-6830",
    "datePublished": "2020-05-26T17:06:52.000Z",
    "dateReserved": "2020-01-10T00:00:00.000Z",
    "dateUpdated": "2024-08-04T09:11:05.047Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-6830",
      "date": "2026-10-29",
      "epss": "0.0091",
      "percentile": "0.59902"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "Firefox for iOS",
                "vendor": "Mozilla",
                "versions": [
                  {
                    "lessThan": "25",
                    "status": "affected",
                    "version": "unspecified",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "security@mozilla.org"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:iphone_os:*:*",
                    "matchCriteriaId": "71C2152F-1CC5-458A-9759-E936C51763C8",
                    "versionEndExcluding": "25.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can\u0027t call the bridging functions. That token was being used for JS-to-native also, but it isn\u0027t needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS \u003c 25."
          },
          {
            "lang": "es",
            "value": "Para el puente de red native-to-JS, la aplicaci\u00f3n requiere que un token \u00fanico que sea pasado garantice que el c\u00f3digo que no sea de la aplicaci\u00f3n no pueda llamar a las funciones del puente de red. Ese token tambi\u00e9n estaba siendo utilizado para JS-to-native, pero no es necesario en este caso, y su uso tambi\u00e9n estaba filtrando este token. Esta vulnerabilidad afecta a Firefox para iOS versiones anteriores a 25."
          }
        ],
        "id": "CVE-2020-6830",
        "lastModified": "2026-08-19T15:30:33.807",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2020-05-26T18:15:11.450",
        "references": [
          {
            "source": "security@mozilla.org",
            "tags": [
              "Permissions Required"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-15/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Permissions Required"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632387"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2020-15/"
          }
        ],
        "sourceIdentifier": "security@mozilla.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-200"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-05-22T17:30:13+00:00",
      "cve": "CVE-2020-6830",
      "id": "CVE-2020-6830",
      "initial_release_date": "2020-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2020-6830",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-6830.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.