CVE-2022-26387

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "98", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "91.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "43B912E3-7770-4946-8AAD-ED9055634619", "versionEndExcluding": "98.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "B306104D-CFD1-4902-9E12-FF42123BB278", "versionEndExcluding": "91.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "9345E361-5C90-453D-83B6-220E6351C8AE", "versionEndExcluding": "91.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7."}, {"lang": "es", "value": "Al instalar un complemento, Firefox verificaba la firma antes de avisar al usuario; pero mientras el usuario confirmaba el mensaje, el archivo complementario subyacente podr\u00eda haberse modificado y Firefox no se habr\u00eda dado cuenta. Esta vulnerabilidad afecta a Firefox &lt; 98, Firefox ESR &lt; 91,7 y Thunderbird &lt; 91.7."}], "id": "CVE-2022-26387", "lastModified": "2026-06-17T04:35:08.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-26387", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-04-15T20:10:36.855650Z", "version": "2.0.3"}}]}, "published": "2022-12-22T20:15:22.340", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1752979"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-10/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-11/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-12/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1752979"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-10/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-11/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2022-12/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-367"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2022:0824", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:91.7.0-3.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2022-03-10T00:00:00Z"}, {"advisory": "RHSA-2022:0850", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:91.7.0-2.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2022-03-14T00:00:00Z"}, {"advisory": "RHSA-2022:0818", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:91.7.0-3.el8_5", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-03-10T00:00:00Z"}, {"advisory": "RHSA-2022:0845", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:91.7.0-2.el8_5", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-03-14T00:00:00Z"}, {"advisory": "RHSA-2022:0815", "cpe": "cpe:/a:redhat:rhel_e4s:8.1", "package": "firefox-0:91.7.0-3.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-03-10T00:00:00Z"}, {"advisory": "RHSA-2022:0847", "cpe": "cpe:/a:redhat:rhel_e4s:8.1", "package": "thunderbird-0:91.7.0-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-03-14T00:00:00Z"}, {"advisory": "RHSA-2022:0816", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:91.7.0-3.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-03-10T00:00:00Z"}, {"advisory": "RHSA-2022:0843", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:91.7.0-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-03-14T00:00:00Z"}, {"advisory": "RHSA-2022:0817", "cpe": "cpe:/a:redhat:rhel_eus:8.4", "package": "firefox-0:91.7.0-3.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-03-10T00:00:00Z"}, {"advisory": "RHSA-2022:0853", "cpe": "cpe:/a:redhat:rhel_eus:8.4", "package": "thunderbird-0:91.7.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-03-14T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Time-of-check time-of-use bug when verifying add-on signatures", "id": "2062222", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2062222"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-367", "details": ["When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.", "A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified, and Firefox would not have noticed."], "name": "CVE-2022-26387", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-03-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-26387\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-26387"], "threat_severity": "Important"}

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