CVE-2020-6794

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{"affected": [{"affectedData": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "68.5", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "BED2E060-4B8C-403F-B1E9-D45E2511D1CA", "versionEndExcluding": "68.5.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*", "matchCriteriaId": "A31C8344-3E02-4EB8-8BD8-4C84B7959624", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Thunderbird < 68.5."}, {"lang": "es", "value": "Si un usuario ha guardado las contrase\u00f1as antes de Thunderbird versi\u00f3n 60 y luego m\u00e1s tarde estableci\u00f3 una contrase\u00f1a maestra, una copia no cifrada de estas contrase\u00f1as a\u00fan son accesibles. Esto es debido a que el archivo de contrase\u00f1as almacenadas m\u00e1s antiguo no fue eliminado cuando los datos fueron copiados a un nuevo formato a partir de Thunderbird versi\u00f3n 60. La nueva contrase\u00f1a maestra es agregada s\u00f3lo en el nuevo archivo. Esto podr\u00eda permitir la exposici\u00f3n de los datos de las contrase\u00f1as almacenadas fuera de las expectativas del usuario. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.5."}], "id": "CVE-2020-6794", "lastModified": "2026-06-17T03:23:49.093", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-03-02T05:15:12.260", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1606619"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-10"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4328-1/"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4335-1/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-07/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1606619"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4328-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4335-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-07/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-312"}, {"lang": "en", "value": "CWE-459"}, {"lang": "en", "value": "CWE-522"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Jurgen Gaeremyn as the original reporter.", "affected_release": [{"advisory": "RHSA-2020:0574", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:68.5.0-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-02-24T00:00:00Z"}, {"advisory": "RHSA-2020:0576", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:68.5.0-1.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-02-24T00:00:00Z"}, {"advisory": "RHSA-2020:0577", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:68.5.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-02-24T00:00:00Z"}, {"advisory": "RHSA-2020:0565", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "thunderbird-0:68.5.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-02-20T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Setting a master password post-Thunderbird 52 does not delete unencrypted previously stored passwords", "id": "1801956", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1801956"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-312", "details": ["If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Thunderbird < 68.5."], "name": "CVE-2020-6794", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2020-02-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-6794\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-6794\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2020-07/#CVE-2020-6794"], "threat_severity": "Moderate"}

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