Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Denx | U-Boot | < 2017.09 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/100675Third Party AdvisoryVDB Entry
- https://www.kb.cert.org/vuls/id/166743Third Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/100675Third Party AdvisoryVDB Entry
- https://www.kb.cert.org/vuls/id/166743Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2017-3226?
CVE-2017-3226 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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., setti...
How severe is CVE-2017-3226?
CVE-2017-3226 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-3226?
Check the references section above for vendor advisories and patch information. Affected products include: Denx U-Boot.