#VU5078 Security bypass in Microsoft Internet Explorer - CVE-2016-0188

Vulnerability identifier: #VU5078

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-0188

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Internet Explorer
Client/Desktop applications / Web browsers

Vendor: Microsoft

Description
The vulnerabiity allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to improper validation of code integrity by the User Mode Code Integrity (UMCI) component of Device Guard. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, bypass code-signing protection mechanism and execute a malicious code.

Successful exploitation of this vulnerability may result in arbitrary code execution on the vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 11

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External links
https://technet.microsoft.com/en-us/library/security/ms16-051.aspx

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.