CVE - CVE-2024-25618

CVE-ID
CVE-2024-25618	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Mastodon is a free, open-source social network server based on ActivityPub. Mastodon allows new identities from configured authentication providers (CAS, SAML, OIDC) to attach to existing local users with the same e-mail address. This results in a possible account takeover if the authentication provider allows changing the e-mail address or multiple authentication providers are configured. When a user logs in through an external authentication provider for the first time, Mastodon checks the e-mail address passed by the provider to find an existing account. However, using the e-mail address alone means that if the authentication provider allows changing the e-mail address of an account, the Mastodon account can immediately be hijacked. All users logging in through external authentication providers are affected. The severity is medium, as it also requires the external authentication provider to misbehave. However, some well-known OIDC providers (like Microsoft Azure) make it very easy to accidentally allow unverified e-mail changes. Moreover, OpenID Connect also allows dynamic client registration. This issue has been addressed in versions 4.2.6, 4.1.14, 4.0.14, and 3.5.18. Users are advised to upgrade. There are no known workarounds for this vulnerability.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/mastodon/mastodon/commit/b31af34c9716338e4a32a62cc812d1ca59e88d15 URL:https://github.com/mastodon/mastodon/commit/b31af34c9716338e4a32a62cc812d1ca59e88d15 MISC:https://github.com/mastodon/mastodon/security/advisories/GHSA-vm39-j3vx-pch3 URL:https://github.com/mastodon/mastodon/security/advisories/GHSA-vm39-j3vx-pch3
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20240208	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240208)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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