{"api_version":"1","generated_at":"2026-07-23T06:11:26+00:00","cve":"CVE-2017-3226","urls":{"html":"https://cve.report/CVE-2017-3226","api":"https://cve.report/api/cve/CVE-2017-3226.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-3226","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-3226"},"summary":{"title":"CVE-2017-3226","description":"Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. Devices that make use of Das U-Boot's AES-CBC encryption feature using environment encryption (i.e., setting the configuration parameter CONFIG_ENV_AES=y) read environment variables from disk as the encrypted disk image is processed. An attacker with physical access to the device can manipulate the encrypted environment data to include a crafted two-byte sequence which triggers an error in environment variable parsing. This error condition is improperly handled by Das U-Boot, resulting in an immediate process termination with a debugging message.","state":"PUBLIC","assigner":"cert@cert.org","published_at":"2018-07-24 15:29:00","updated_at":"2019-10-09 23:27:00"},"problem_types":["CWE-310"],"metrics":[],"references":[{"url":"http://www.securityfocus.com/bid/100675","name":"100675","refsource":"BID","tags":["Third Party Advisory","VDB Entry"],"title":"Das U-Boot Security Weakness and Information Disclosure Vulnerabilities","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.kb.cert.org/vuls/id/166743","name":"VU#166743","refsource":"CERT-VN","tags":["Third Party Advisory","US Government Resource"],"title":"Vulnerability Note VU#166743 - Das U-Boot AES-CBC encryption implementation contains multiple vulnerabilities","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-3226","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-3226","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2017","cve_id":"3226","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"denx","cpe5":"u-boot","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3226","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"denx","cpe5":"u-boot","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":"cert@cert.org","ID":"CVE-2017-3226","STATE":"PUBLIC","TITLE":"Das U-Boot's AES-CBC encryption feature improperly handles an error condition and may allow attacks against the underlying cryptographic implementation and allow an attacker to decrypt the data"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"U-Boot","version":{"version_data":[{"affected":"<","version_name":"2017.09","version_value":"2017.09"}]}}]},"vendor_name":"Das"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. Devices that make use of Das U-Boot's AES-CBC encryption feature using environment encryption (i.e., setting the configuration parameter CONFIG_ENV_AES=y) read environment variables from disk as the encrypted disk image is processed. An attacker with physical access to the device can manipulate the encrypted environment data to include a crafted two-byte sequence which triggers an error in environment variable parsing. This error condition is improperly handled by Das U-Boot, resulting in an immediate process termination with a debugging message."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-329"}]}]},"references":{"reference_data":[{"name":"100675","refsource":"BID","url":"http://www.securityfocus.com/bid/100675"},{"name":"VU#166743","refsource":"CERT-VN","url":"https://www.kb.cert.org/vuls/id/166743"}]},"source":{"discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2018-07-24 15:29:00","lastModifiedDate":"2019-10-09 23:27:00","problem_types":["CWE-310"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"PHYSICAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM"},"exploitabilityScore":0.5,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:P/A:P","accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.4},"severity":"MEDIUM","exploitabilityScore":3.4,"impactScore":6.4,"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:denx:u-boot:*:*:*:*:*:*:*:*","versionEndExcluding":"2017.09","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"3226","Ordinal":"99457","Title":"CVE-2017-3226","CVE":"CVE-2017-3226","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"3226","Ordinal":"1","NoteData":"Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. Devices that make use of Das U-Boot's AES-CBC encryption feature using environment encryption (i.e., setting the configuration parameter CONFIG_ENV_AES=y) read environment variables from disk as the encrypted disk image is processed. An attacker with physical access to the device can manipulate the encrypted environment data to include a crafted two-byte sequence which triggers an error in environment variable parsing. This error condition is improperly handled by Das U-Boot, resulting in an immediate process termination with a debugging message.","Type":"Description","Title":null},{"CveYear":"2017","CveId":"3226","Ordinal":"2","NoteData":"2018-07-24","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"3226","Ordinal":"3","NoteData":"2018-07-25","Type":"Other","Title":"Modified"}]}}}