#VU13686 Security restrictions bypass in Microsoft Edge - CVE-2018-8276

Vulnerability identifier: #VU13686

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-8276

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The vulnerability exists due to improper handling of accessing memory by the Microsoft Chakra scripting engine. A local attacker can run the Microsoft Chakra scripting engine, browse to a malicious website and bypass Control Flow Guard (CFG).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge: All versions

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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