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

CVE-2018-5092 (GCVE-0-2018-5092)

Vulnerability from cvelistv5 – Published: 2018-06-11 21:00 – Updated: 2024-08-05 05:26
VLAI
Summary
A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox < 58.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Use-after-free in Web Workers
Assigner
References
URL Tags
http://www.securitytracker.com/id/1040270 vdb-entryx_refsource_SECTRACK
https://bugzilla.mozilla.org/show_bug.cgi?id=1418074 x_refsource_CONFIRM
https://usn.ubuntu.com/3544-1/ vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/102786 vdb-entryx_refsource_BID
https://www.mozilla.org/security/advisories/mfsa2… x_refsource_CONFIRM
Impacted products
Vendor Product Version CPE status
Mozilla Firefox Affected: unspecified , < 58 (custom)
guessed Create a notification for this product.
Date Public
2018-01-23 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T05:26:46.545Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "1040270",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1040270"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1418074"
          },
          {
            "name": "USN-3544-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3544-1/"
          },
          {
            "name": "102786",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/102786"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2018-02/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "58",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2018-01-23T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox \u003c 58."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Use-after-free in Web Workers",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-06-12T09:57:01.000Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "name": "1040270",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1040270"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1418074"
        },
        {
          "name": "USN-3544-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3544-1/"
        },
        {
          "name": "102786",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/102786"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.mozilla.org/security/advisories/mfsa2018-02/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@mozilla.org",
          "ID": "CVE-2018-5092",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Firefox",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "58"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Mozilla"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox \u003c 58."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Use-after-free in Web Workers"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "1040270",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1040270"
            },
            {
              "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1418074",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1418074"
            },
            {
              "name": "USN-3544-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3544-1/"
            },
            {
              "name": "102786",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/102786"
            },
            {
              "name": "https://www.mozilla.org/security/advisories/mfsa2018-02/",
              "refsource": "CONFIRM",
              "url": "https://www.mozilla.org/security/advisories/mfsa2018-02/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2018-5092",
    "datePublished": "2018-06-11T21:00:00.000Z",
    "dateReserved": "2018-01-03T00:00:00.000Z",
    "dateUpdated": "2024-08-05T05:26:46.545Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2018-5092",
      "date": "2026-09-15",
      "epss": "0.01817",
      "percentile": "0.7753"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"57.0.4\", \"matchCriteriaId\": \"1725C8A3-FA9C-4A5E-B46F-48FDB429E7EE\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*\", \"matchCriteriaId\": \"B5A6F2F3-4894-4392-8296-3B8DD2679084\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\", \"matchCriteriaId\": \"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"9070C9D8-A14A-467F-8253-33B966C16886\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox \u003c 58.\"}, {\"lang\": \"es\", \"value\": \"Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando el hilo para un Web Worker se libera de la memoria prematuramente en vez de la memoria en el hilo principal cuando se cancelan las operaciones fetch. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox.\"}]",
      "id": "CVE-2018-5092",
      "lastModified": "2024-11-21T04:08:05.047",
      "metrics": "{\"cvssMetricV30\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.0\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:P/A:P\", \"baseScore\": 7.5, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 10.0, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2018-06-11T21:29:12.327",
      "references": "[{\"url\": \"http://www.securityfocus.com/bid/102786\", \"source\": \"security@mozilla.org\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"http://www.securitytracker.com/id/1040270\", \"source\": \"security@mozilla.org\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://bugzilla.mozilla.org/show_bug.cgi?id=1418074\", \"source\": \"security@mozilla.org\", \"tags\": [\"Issue Tracking\", \"Permissions Required\"]}, {\"url\": \"https://usn.ubuntu.com/3544-1/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2018-02/\", \"source\": \"security@mozilla.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/102786\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"http://www.securitytracker.com/id/1040270\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://bugzilla.mozilla.org/show_bug.cgi?id=1418074\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Permissions Required\"]}, {\"url\": \"https://usn.ubuntu.com/3544-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2018-02/\", \"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-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2018-5092\",\"sourceIdentifier\":\"security@mozilla.org\",\"published\":\"2018-06-11T21:29:12.327\",\"lastModified\":\"2024-11-21T04:08:05.047\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox \u003c 58.\"},{\"lang\":\"es\",\"value\":\"Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando el hilo para un Web Worker se libera de la memoria prematuramente en vez de la memoria en el hilo principal cuando se cancelan las operaciones fetch. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"57.0.4\",\"matchCriteriaId\":\"1725C8A3-FA9C-4A5E-B46F-48FDB429E7EE\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B5A6F2F3-4894-4392-8296-3B8DD2679084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9070C9D8-A14A-467F-8253-33B966C16886\"}]}]}],\"references\":[{\"url\":\"http://www.securityfocus.com/bid/102786\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1040270\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1418074\",\"source\":\"security@mozilla.org\",\"tags\":[\"Issue Tracking\",\"Permissions Required\"]},{\"url\":\"https://usn.ubuntu.com/3544-1/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2018-02/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/102786\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1040270\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1418074\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Permissions Required\"]},{\"url\":\"https://usn.ubuntu.com/3544-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2018-02/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-26T16:58:01Z",
      "cve": "CVE-2018-5092",
      "id": "CVE-2018-5092",
      "initial_release_date": "2023-02-15T04:32:21Z",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "42",
      "product_status:recommended": "12",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-5092",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-5092.json",
      "version": "8"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.