{"api_version":"1","generated_at":"2026-06-02T17:31:08+00:00","cve":"CVE-2021-37847","urls":{"html":"https://cve.report/CVE-2021-37847","api":"https://cve.report/api/cve/CVE-2021-37847.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-37847","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-37847"},"summary":{"title":"CVE-2021-37847","description":"crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest verification.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-08-02 20:15:00","updated_at":"2021-09-21 19:24:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb","name":"https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb","refsource":"MISC","tags":[],"title":"barebox_advisory.md · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe","name":"https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe","refsource":"MISC","tags":[],"title":"crypto: digest: use crypto_memneq() · saschahauer/barebox@0a9f9a7 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-37847","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37847","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"37847","vulnerable":"1","versionEndIncluding":"2021.07.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"pengutronix","cpe5":"barebox","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-37847","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest verification."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe","refsource":"MISC","name":"https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe"},{"refsource":"MISC","name":"https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb","url":"https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb"}]}},"nvd":{"publishedDate":"2021-08-02 20:15:00","lastModifiedDate":"2021-09-21 19:24:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"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:pengutronix:barebox:*:*:*:*:*:*:*:*","versionEndIncluding":"2021.07.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"37847","Ordinal":"213444","Title":"CVE-2021-37847","CVE":"CVE-2021-37847","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"37847","Ordinal":"1","NoteData":"crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest verification.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"37847","Ordinal":"2","NoteData":"2021-08-02","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"37847","Ordinal":"3","NoteData":"2021-08-30","Type":"Other","Title":"Modified"}]}}}