#VU81415 Improper Authentication in Misskey - CVE-2023-43793

Vulnerability identifier: #VU81415

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-43793

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Misskey
Web applications / Modules and components for CMS

Vendor: Misskey Development Division

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within Bull dashboard. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Misskey: 13.0.0 - 13.14.2

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External links
https://github.com/misskey-dev/misskey/security/advisories/GHSA-9fj2-gjcf-cqqc

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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