Vulnerability identifier: #VU9848

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0818

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Edge
Client/Desktop applications / Web browsers

Vendor: Microsoft

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

The vulnerability exists due to an error in Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed. A remote attacker can create a specially crafted website, trick the victim into visiting it, and bypass implemented CFG.

This vulnerability can be used along with another vulnerability to successfully compromise the affected system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge:

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0818

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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.