Security Update for Secure Boot



Published: 2016-07-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-3287
CWE-ID CWE-264
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Secure Boot bypass vulnerability

EUVDB-ID: #VU120

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2016-3287

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to operating system incorrectly applies affected security policy. A local user with administrative privileges or physical access to computer can disable code integrity checks and allow execution of test-signed executables and drivers.

Successful exploitation of this vulnerability may allow an attacker to gain elevated privileges within the system, access encrypted data, stored on the system, bypass Secure Boot Integrity Validation for BitLocker and the Device Encryption security features.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Windows: 8.1 - 10

Windows Server: 2012 - 2012 R2

External links

http://technet.microsoft.com/en-us/library/security/MS16-094


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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