{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-1942", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2025-03-04T12:29:51.191Z", "datePublished": "2025-03-04T13:31:25.504Z", "dateUpdated": "2025-03-25T14:10:00.285Z"}, "containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "136", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "136", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136."}]}], "problemTypes": [{"descriptions": [{"description": "Disclosure of uninitialized memory when .toUpperCase() causes string to get longer", "lang": "en", "type": "text"}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1947139"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-14/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-17/"}], "credits": [{"lang": "en", "value": "anbu"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2025-03-04T23:41:00.682Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-908", "lang": "en", "description": "CWE-908 Use of Uninitialized Resource"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-03-25T14:08:58.588635Z", "id": "CVE-2025-1942", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-25T14:10:00.285Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-1942", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-03-25T14:08:58.588635Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-908", "description": "CWE-908 Use of Uninitialized Resource"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-04T15:45:14.531Z"}}], "cna": {"credits": [{"lang": "en", "value": "anbu"}], "affected": [{"vendor": "Mozilla", "product": "Firefox", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "136", "versionType": "custom"}]}, {"vendor": "Mozilla", "product": "Thunderbird", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "136", "versionType": "custom"}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1947139"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-14/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-17/"}], "descriptions": [{"lang": "en", "value": "When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.", "supportingMedia": [{"type": "text/html", "value": "When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "Disclosure of uninitialized memory when .toUpperCase() causes string to get longer"}]}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2025-03-04T23:41:00.682Z"}}}, "cveMetadata": {"cveId": "CVE-2025-1942", "state": "PUBLISHED", "dateUpdated": "2025-03-25T14:10:00.285Z", "dateReserved": "2025-03-04T12:29:51.191Z", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "datePublished": "2025-03-04T13:31:25.504Z", "assignerShortName": "mozilla"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136."}, {"lang": "es", "value": "Cuando String.toUpperCase() hac\u00eda que una cadena se hiciera m\u00e1s larga, era posible que la memoria no inicializada se incorporara a la cadena de resultado. Esta vulnerabilidad afecta a Firefox &lt; 136 y Thunderbird &lt; 136."}], "id": "CVE-2025-1942", "lastModified": "2025-03-25T15:15:24.603", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-03-04T14:15:39.167", "references": [{"source": "security@mozilla.org", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1947139"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2025-14/"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2025-17/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "firefox: Disclosure of uninitialized memory when .toUpperCase() causes string to get longer", "id": "2349791", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2349791"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-824", "details": ["When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.", "A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: When String.toUpperCase() causes a string to get longer, it is possible for uninitialized memory to be incorporated into the result string."], "name": "CVE-2025-1942", "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:7", "fix_state": "Fix deferred", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "firefox-flatpak-container", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-03-04T13:31:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-1942\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-1942\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=1947139\nhttps://www.mozilla.org/security/advisories/mfsa2025-14/"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}