Microsoft Browser Elevation of Privilege Vulnerability

1) Cross-domain policy bypass

EUVDB-ID: #VU4102

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-0002

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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

The vulnerability exists due to Microsoft Edge does not properly enforce cross-domain policies with about:blank. A remote attacker can create a specially crafted web page, trick the victim into visiting it and access information from one domain and inject it into another domain.

Successful exploitation of the vulnerability may allow an attacker to gain unauthorized access to potentially sensitive information and perform cross-site scripting or phishing attacks.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Microsoft Edge: All versions

CPE2.3

• cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0002

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.