Vulnerability identifier: #VU6458

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0238

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error in JavaScript engines. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0238

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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.