CVE-2017-3226 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.4 MEDIUM
Vector:  CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-310 Cryptographic Issues cwe source acceptance level NIST  
CWE-329 Not Using a Random IV with CBC Mode Reference acceptance level CERT/CC  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-3226
NVD Published Date:
07/24/2018
NVD Last Modified:
10/09/2019
Source:
MITRE