Input validation error in Mastodon - CVE-2023-36462
Published: July 10, 2023
Vulnerability identifier: #VU78044
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-36462
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can craft a verified profile link using specific formatting to conceal arbitrary parts of the link, enabling it to appear to link to a different URL altogether.
Affected software
Mastodon
How to mitigate CVE-2023-36462
Install updates from vendor's website.
Mastodon - addressed in versions 3.5.9, 4.0.5, 4.1.3
External References
- https://github.com/mastodon/mastodon/commit/610731b03dfcadd887078cb0399f4e514aa1931c
- https://github.com/mastodon/mastodon/releases/tag/v3.5.9
- https://github.com/mastodon/mastodon/releases/tag/v4.0.5
- https://github.com/mastodon/mastodon/security/advisories/GHSA-55j9-c3mp-6fcq
- https://github.com/mastodon/mastodon/releases/tag/v4.1.3