#VU86476 Spoofing attack in Microsoft Azure Active Directory B2C - CVE-2024-21381

Vulnerability identifier: #VU86476

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-21381

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Azure Active Directory B2C
Other software / Other software solutions

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Microsoft Azure Active Directory B2C. A remote user can spoof page content.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Azure Active Directory B2C: All versions

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21381

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.