CVE-2017-3226

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.

CVSS v3.0 6.4 MEDIUM
CVSS v2.0 4.4 MEDIUM

6.4^/10

CVSS v3.0 : MEDIUM

Vector : AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.5 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.kb.cert.org/vuls/id/166743	Third Party Advisory US Government Resource
http://www.securityfocus.com/bid/100675	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*

Information

Published : 2018-07-24 08:29

Updated : 2019-10-09 16:27

NVD link : CVE-2017-3226

Mitre link : CVE-2017-3226

JSON object : View

CWE

CWE-310

Cryptographic Issues

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Products Affected

denx

u-boot

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