Title: EyeLock Myris 3.3.2 SDK Service Unquoted Service Path Privilege Escalation
Advisory ID: ZSL-2016-5355
Type: Local
Impact: Privilege Escalation
Risk: (2/5)
Release Date: 10.08.2016

Summary

myris® provides unparalleled security, is portable, lightweight and is as easy as looking in a mirror. Use myris to quickly and easily enroll users for EyeLock’s access control products or to grant users access to corporate domain environments within seconds—users never have to type their username and password again.

Description

The application suffers from an unquoted search path issue impacting the service 'MyrisService' for Windows deployed as part of Myris solution. This could potentially allow an authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges of the application.

Vendor

EyeLock, LLC - http://www.eyelock.com

Affected Version

3.3.21289.1311

Tested On

Microsoft Windows 7 Professional SP1 (EN)
Microsoft Windows 7 Ultimate SP1 (EN)

Vendor Status

[10.06.2016] Vulnerability discovered.
[27.06.2016] Contact with the vendor.
[09.07.2016] No response from the vendor.
[10.08.2016] Public security advisory released.

PoC

myris_eop.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] https://www.exploit-db.com/exploits/40226/
[2] https://exchange.xforce.ibmcloud.com/vulnerabilities/115919
[3] https://packetstormsecurity.com/files/138273
[4] https://cxsecurity.com/issue/WLB-2016080101

Changelog

[10.08.2016] - Initial release
[13.08.2016] - Added reference [1], [2], [3] and [4]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk