{"id":"UBUNTU-CVE-2017-3226","details":"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.","modified":"2025-10-24T04:46:06Z","published":"2018-07-24T15:29:00Z","upstream":["CVE-2017-3226"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-3226"},{"type":"REPORT","url":"https://www.kb.cert.org/vuls/id/166743"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-3226"}],"affected":[{"package":{"name":"u-boot","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/u-boot@2016.01+dfsg1-2ubuntu5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2015.04+dfsg1-2ubuntu1","2015.10+dfsg1-2","2015.10+dfsg1-3","2015.10+dfsg1-4","2016.01+dfsg1-1","2016.01+dfsg1-1ubuntu1","2016.01+dfsg1-2ubuntu1","2016.01+dfsg1-2ubuntu2","2016.01+dfsg1-2ubuntu3","2016.01+dfsg1-2ubuntu5"],"ecosystem_specific":{"binaries":[{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-exynos"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-imx"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-omap"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-rockchip"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-rpi"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-sunxi"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-tegra"},{"binary_version":"2016.01+dfsg1-2ubuntu5","binary_name":"u-boot-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3226.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"negligible"}]}