Microsoft Edge Security Feature Bypass Vulnerability

1) Security bypass

EUVDB-ID: #VU7058

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-8523

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists due to improper applying of Same Origin Policy for HTML elements. A remote attacker can create a specially crafted website containing malicious content, trick the victim into visiting it and bypass security restrictions.

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

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Microsoft Edge: All versions

CPE2.3

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8523

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.