Multiple vulnerabilities in Microsoft Edge (Chromium-based)

Published: 2021-06-24

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-34475 CVE-2021-34506
CWE-ID	CWE-264 CWE-254
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Microsoft Edge Client/Desktop applications / Web browsers
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU54374

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-2021-34475

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to unspecified error. A remote attacker can trick the victim to visit a specially crafted website and bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge: 79.0.309.71 - 91.0.864.54

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34475

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.

2) Security features bypass

EUVDB-ID: #VU54375