Vulnerability identifier: #VU7048

Vulnerability risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8555

CWE-ID: CWE-20

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 security restriction on the target system.

The weakness exists due to improper input validation of the Edge Content Security Policy (CSP). A remote attacker can create a specially crafted website containing malicious content, trick the victim into loading it and bypass security restrictions.

Successful exploitation of the vulnerability may result in access to the affected system.

Mitigation
Install update 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-2017-8555

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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.