{"api_version":"1","generated_at":"2026-04-23T08:04:34+00:00","cve":"CVE-2020-10932","urls":{"html":"https://cve.report/CVE-2020-10932","api":"https://cve.report/api/cve/CVE-2020-10932.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-10932","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-10932"},"summary":{"title":"CVE-2020-10932","description":"An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-04-15 14:15:00","updated_at":"2023-03-03 15:32:00"},"problem_types":["CWE-327","CWE-203"],"metrics":[],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/","name":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/","refsource":"MISC","tags":[],"title":"[SECURITY] Fedora 32 Update: mbedtls-2.16.6-1.fc32 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-04","name":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-04","refsource":"CONFIRM","tags":["Vendor Advisory"],"title":"Side channel attack on ECDSA - Tech Updates - Mbed TLS (Previously PolarSSL)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/","name":"FEDORA-2020-9a6e8e63e9","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 32 Update: mbedtls-2.16.6-1.fc32 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://tls.mbed.org/tech-updates/security-advisories","name":"https://tls.mbed.org/tech-updates/security-advisories","refsource":"MISC","tags":["Vendor Advisory"],"title":"Security Advisories - Tech Updates - mbed TLS (Previously PolarSSL)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released","name":"https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released","refsource":"CONFIRM","tags":["Release Notes","Vendor Advisory"],"title":"Mbed TLS 2.16.6 and 2.7.15 released - 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package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-10932","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10932","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"10932","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"arm","cpe5":"mbed_tls","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"10932","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"arm","cpe5":"mbed_tls","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"10932","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"10.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"10932","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"31","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"10932","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"32","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-10932","qid":"181446","title":"Debian Security Update for mbedtls (DLA 3249-1)"},{"cve":"CVE-2020-10932","qid":"500397","title":"Alpine Linux Security Update for mbedtls"},{"cve":"CVE-2020-10932","qid":"504155","title":"Alpine Linux Security Update for mbedtls"},{"cve":"CVE-2020-10932","qid":"750330","title":"OpenSUSE Security Update for mbedtls (openSUSE-SU-2021:0384-1)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2020-10932","ASSIGNER":"cve@mitre.org","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. 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Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a","version_affected":"?"}]}}]}}]}},"references":{"reference_data":[{"url":"https://tls.mbed.org/tech-updates/security-advisories","refsource":"MISC","name":"https://tls.mbed.org/tech-updates/security-advisories"},{"url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html","refsource":"MISC","name":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"},{"url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-04","refsource":"MISC","name":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-04"},{"url":"https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released","refsource":"MISC","name":"https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/","refsource":"MISC","name":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNOS2IIBH5WNJXZUV546PY7666DE7Y3L/","refsource":"MISC","name":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNOS2IIBH5WNJXZUV546PY7666DE7Y3L/"}]}},"nvd":{"publishedDate":"2020-04-15 14:15:00","lastModifiedDate":"2023-03-03 15:32:00","problem_types":["CWE-327","CWE-203"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM"},"exploitabilityScore":1,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:N/A:N","accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":1.9},"severity":"LOW","exploitabilityScore":3.4,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*","versionStartIncluding":"2.16.0","versionEndExcluding":"2.16.6","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*","versionStartIncluding":"2.7.0","versionEndExcluding":"2.7.15","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"10932","Ordinal":"171471","Title":"CVE-2020-10932","CVE":"CVE-2020-10932","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"10932","Ordinal":"1","NoteData":"An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"10932","Ordinal":"2","NoteData":"2020-04-15","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"10932","Ordinal":"3","NoteData":"2020-06-05","Type":"Other","Title":"Modified"}]}}}