Spoofing attack in Microsoft Windows MSHTML Platform and Internet Explorer

1) Universal cross-site scripting

EUVDB-ID: #VU98154

Risk: Medium

CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2024-43573

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

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 11 - 11.1790.17763.0

Windows: before 10 21H2 10.0.19044.5011, 10 22H2 10.0.19045.5011, 10 1507 10.0.10240.20796, 10 1607 10.0.14393.7428, 11 21H2 10.0.22000.3260, 11 22H2 10.0.22621.4317, 11 23H2 10.0.22631.4317, 11 24H2 10.0.26100.2033, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011, 10 21H2 10.0.19044.5011

Windows Server: before 2012 R2 6.3.9600.22221, 2016 10.0.14393.7428, 2019 10.0.17763.6414, 2022 10.0.20348.2762, 2022 23H2 10.0.25398.1189, 2012 R2 6.3.9600.22221, 2012 R2 6.3.9600.22221, 2012 R2 6.3.9600.22221

CPE2.3

• cpe:2.3:a:microsoft:microsoft_internet_explorer:11:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:microsoft_internet_explorer:11.0.17763.3770:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:microsoft_internet_explorer:11.0.17763.4377:*:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows_server:*:*:*:*:*:*:*:

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-43573

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?

Yes. This vulnerability is being exploited in the wild.