CVE-2020-15953

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When a server sends a \"begin TLS\" response, the client reads additional data (e.g., from a meddler-in-the-middle attacker) and evaluates it in a TLS context, aka \"response injection.\""}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://github.com/dinhvh/libetpan/issues/386", "refsource": "MISC", "url": "https://github.com/dinhvh/libetpan/issues/386"}, {"name": "GLSA-202007-55", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202007-55"}, {"name": "[debian-lts-announce] 20200816 [SECURITY] [DLA 2329-1] libetpan security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html"}, {"name": "FEDORA-2020-13ae5f7221", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/"}, {"name": "FEDORA-2020-44e52ef729", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/"}, {"name": "openSUSE-SU-2020:1454", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html"}, {"name": "openSUSE-SU-2020:1505", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:30:23.456Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/dinhvh/libetpan/issues/386"}, {"name": "GLSA-202007-55", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202007-55"}, {"name": "[debian-lts-announce] 20200816 [SECURITY] [DLA 2329-1] libetpan security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html"}, {"name": "FEDORA-2020-13ae5f7221", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/"}, {"name": "FEDORA-2020-44e52ef729", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/"}, {"name": "openSUSE-SU-2020:1454", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html"}, {"name": "openSUSE-SU-2020:1505", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-15953", "datePublished": "2020-07-27T06:07:04.000Z", "dateReserved": "2020-07-27T00:00:00.000Z", "dateUpdated": "2024-08-04T13:30:23.456Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"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:libetpan_project:libetpan:*:*:*:*:*:*:*:*", "matchCriteriaId": "265D13E3-68BC-4CD7-B04E-A9713F74895F", "versionEndIncluding": "1.9.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:libmailcore:mailcore2:*:*:*:*:*:*:*:*", "matchCriteriaId": "3BC108A8-B707-46A8-BD74-19DB4DDD7E56", "versionEndIncluding": "0.6.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibEtPan through 1.9.4, as used in MailCore 2 through 0.6.3 and other products, has a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a \"begin TLS\" response, the client reads additional data (e.g., from a meddler-in-the-middle attacker) and evaluates it in a TLS context, aka \"response injection.\""}, {"lang": "es", "value": "LibEtPan versiones hasta 1.9.4, como es usado en MailCore 2 versiones hasta 0.6.3 y otros productos, presenta un problema de almacenamiento en b\u00fafer STARTTLS que afecta a IMAP, SMTP y POP3. Cuando un servidor env\u00eda una respuesta \"begin TLS\", el cliente lee datos adicionales (por ejemplo, de un atacante de tipo meddler-in-the-middle) y los eval\u00faa en un contexto TLS, tambi\u00e9n se conoce como \"response injection\""}], "id": "CVE-2020-15953", "lastModified": "2026-06-17T02:57:28.980", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-27T07:15:10.910", "references": [{"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html"}, {"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/dinhvh/libetpan/issues/386"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-55"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/dinhvh/libetpan/issues/386"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-55"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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