{ "data_type": "CVE", "data_format": "MITRE", "data_version": "4.0", "CVE_data_meta": { "ID": "CVE-2020-15669", "ASSIGNER": "security@mozilla.org", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Mozilla", "product": { "product_data": [ { "product_name": "Firefox ESR", "version": { "version_data": [ { "version_value": "68.12", "version_affected": "<" } ] } }, { "product_name": "Thunderbird", "version": { "version_data": [ { "version_value": "68.12", "version_affected": "<" } ] } } ] } } ] } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Use-After-Free when aborting an operation" } ] } ] }, "references": { "reference_data": [ { "url": "https://www.mozilla.org/security/advisories/mfsa2020-40/", "refsource": "MISC", "name": "https://www.mozilla.org/security/advisories/mfsa2020-40/" }, { "url": "https://www.mozilla.org/security/advisories/mfsa2020-37/", "refsource": "MISC", "name": "https://www.mozilla.org/security/advisories/mfsa2020-37/" }, { "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1656957", "refsource": "MISC", "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1656957" } ] }, "description": { "description_data": [ { "lang": "eng", "value": "When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12." } ] } }