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CVE-2017-3226

6.4 · MEDIUM

Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file.

Published Jul 24, 2018CWE-329EPSS 0.27%

Overview

CVE-2017-3226 is a medium-severity vulnerability. It was published on July 24, 2018 and has a CVSS 3.0 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/100675Refwww.kb.cert.org/vuls/id/166743Refwww.securityfocus.com/bid/100675Refwww.kb.cert.org/vuls/id/166743

How CyberStrike helps

Frequently asked questions

What is CVE-2017-3226?

CVE-2017-3226 is a medium-severity vulnerability. It was published on July 24, 2018 and has a CVSS 3.0 base score of 6.4 (MEDIUM).

How severe is CVE-2017-3226?

This vulnerability has a CVSS 3.0 base score of 6.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-3226?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-3226?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-3226 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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