CVE-2020-7957

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This causes a denial of service in which the recipient cannot read all of their messages."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AC:H/AV:N/A:L/C:N/I:N/PR:N/S:U/UI:R", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://dovecot.org/security", "refsource": "MISC", "url": "https://dovecot.org/security"}, {"name": "http://www.openwall.com/lists/oss-security/2020/02/12/2", "refsource": "CONFIRM", "url": "http://www.openwall.com/lists/oss-security/2020/02/12/2"}, {"name": "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html", "refsource": "CONFIRM", "url": "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html"}, {"name": "FEDORA-2020-10a58fda28", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/"}, {"name": "FEDORA-2020-0e6a67af5a", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T09:48:24.611Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://dovecot.org/security"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2020/02/12/2"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html"}, {"name": "FEDORA-2020-10a58fda28", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/"}, {"name": "FEDORA-2020-0e6a67af5a", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-7957", "datePublished": "2020-02-12T16:50:56.000Z", "dateReserved": "2020-01-24T00:00:00.000Z", "dateUpdated": "2024-08-04T09:48:24.611Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*", "matchCriteriaId": "B0CB6EFB-63A3-4B07-8B44-3EB087307500", "versionEndExcluding": "2.3.9.3", "versionStartIncluding": "2.3.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*", "matchCriteriaId": "97A4B8DF-58DA-4AB6-A1F9-331B36409BA3", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages."}, {"lang": "es", "value": "Los plugins IMAP y LMTP en Dovecot versiones 2.3.9 anteriores a 2.3.9.3, manejan inapropiadamente la generaci\u00f3n de fragmentos cuando se deben leer muchos caracteres para calcular el fragmento y existe un car\u00e1cter ) al final. Esto provoca una denegaci\u00f3n de servicio en la que el destinatario no puede leer todos sus mensajes."}], "id": "CVE-2020-7957", "lastModified": "2026-06-17T03:25:41.833", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.0"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "cve@mitre.org", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-02-12T17:15:12.563", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/02/12/2"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://dovecot.org/security"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/02/12/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://dovecot.org/security"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "dovecot: specially crafted email can cause mailbox to have permanently unaccessible mail", "id": "1800502", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1800502"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages."], "name": "CVE-2020-7957", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2020-02-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-7957\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-7957\nhttps://dovecot.org/pipermail/dovecot-news/2020-February/000430.html"], "threat_severity": "Low"}

{}