#VU86045 Origin validation error in Mastodon - CVE-2024-23832

Vulnerability identifier: #VU86045

Vulnerability risk: High

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-23832

CWE-ID: CWE-346

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mastodon
Server applications / Other server solutions

Vendor: Mastodon

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing origin validation. A remote attacker can impersonate and take over any remote account.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mastodon: 3.5.0 - 3.5.16, 4.0.0 - 4.0.12, 4.1.0 - 4.1.12, 4.2.0 beta1 - 4.2.4

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External links
https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rw
https://github.com/mastodon/mastodon/commit/1726085db5cd73dd30953da858f9887bcc90b958

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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.