CVE-2021-32066

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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:ruby-lang:ruby:*:*:*:*:*:*:*:*", "matchCriteriaId": "45D6E5FE-D60E-41D3-9FCA-00F8218377EA", "versionEndIncluding": "2.6.7", "versionStartIncluding": "2.6.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*", "matchCriteriaId": "D29D5386-D306-4CB4-82EC-678319F0101D", "versionEndIncluding": "2.7.3", "versionStartIncluding": "2.7.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*", "matchCriteriaId": "528E25B8-22A4-4AAF-9582-76BCDF3705B5", "versionEndIncluding": "3.0.1", "versionStartIncluding": "3.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*", "matchCriteriaId": "D1298AA2-0103-4457-B260-F976B78468E7", "versionEndExcluding": "9.2.6.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a \"StartTLS stripping attack.\""}, {"lang": "es", "value": "Se ha detectado un problema en Ruby versiones hasta 2.6.7, versiones 2.7.x hasta 2.7.3, y versiones 3.x hasta 3.0.1. Net::IMAP no lanza una excepci\u00f3n cuando StartTLS falla con una respuesta desconocida, lo que podr\u00eda permitir a atacantes tipo man-in-the-middle omitir las protecciones TLS, al aprovechar una posici\u00f3n de red entre el cliente y el registro para bloquear el comando StartTLS, tambi\u00e9n se conoce como \"StartTLS stripping attack\""}], "id": "CVE-2021-32066", "lastModified": "2026-06-17T03:52:44.373", "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": "2021-08-01T19:15:07.697", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://hackerone.com/reports/1178562"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html"}, {"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"}, {"source": "cve@mitre.org", "url": "https://security.gentoo.org/glsa/202401-27"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20210902-0004/"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://hackerone.com/reports/1178562"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202401-27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20210902-0004/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3020", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "ruby:2.7-8040020210728141159.522a0ee4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-05T00:00:00Z"}, {"advisory": "RHSA-2022:0543", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "ruby:2.6-8050020211215144356.c5368500", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-02-16T00:00:00Z"}, {"advisory": "RHSA-2022:0672", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "ruby:2.5-8050020220216195847.c5368500", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-02-24T00:00:00Z"}, {"advisory": "RHSA-2022:0581", "cpe": "cpe:/a:redhat:rhel_e4s:8.1", "package": "ruby:2.6-8010020220201152941.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-02-21T00:00:00Z"}, {"advisory": "RHSA-2022:0582", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "ruby:2.6-8020020220201131207.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-02-21T00:00:00Z"}, {"advisory": "RHSA-2022:0544", "cpe": "cpe:/a:redhat:rhel_eus:8.4", "package": "ruby:2.6-8040020220131135901.522a0ee4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-02-16T00:00:00Z"}, {"advisory": "RHSA-2021:3559", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby27-ruby-0:2.7.4-130.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-09-20T00:00:00Z"}, {"advisory": "RHSA-2021:3982", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby30-ruby-0:3.0.2-148.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-10-25T00:00:00Z"}, {"advisory": "RHSA-2022:0708", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby26-ruby-0:2.6.9-120.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2022-02-28T00:00:00Z"}, {"advisory": "RHSA-2021:3559", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby27-ruby-0:2.7.4-130.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-09-20T00:00:00Z"}, {"advisory": "RHSA-2021:3982", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby30-ruby-0:3.0.2-148.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-10-25T00:00:00Z"}], "bugzilla": {"description": "ruby: StartTLS stripping vulnerability in Net::IMAP", "id": "1980128", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1980128"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-319", "details": ["An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a \"StartTLS stripping attack.\"", "Ruby's Net::IMAP module did not raise an exception when receiving an unexpected response to the STARTTLS command and the connection was not upgraded to use TLS. A man-in-the-middle attacker could use this flaw to prevent Ruby applications using Net::IMAP to enable TLS encryption for a connection to an IMAP server and subsequently eavesdrop on or modify data sent over the plain text connection."], "name": "CVE-2021-32066", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-07-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-32066\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-32066\nhttps://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/"], "threat_severity": "Moderate"}

{}