CVE - CVE-2023-48228

CVE-ID
CVE-2023-48228	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
authentik is an open-source identity provider. When initialising a oauth2 flow with a `code_challenge` and `code_method` (thus requesting PKCE), the single sign-on provider (authentik) must check if there is a matching and existing `code_verifier` during the token step. Prior to versions 2023.10.4 and 2023.8.5, authentik checks if the contents of `code_verifier` is matching only when it is provided. When it is left out completely, authentik simply accepts the token request with out it; even when the flow was started with a `code_challenge`. authentik 2023.8.5 and 2023.10.4 fix this issue.
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/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225 URL:https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225 MISC:https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6 URL:https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6 MISC:https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5 URL:https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5 MISC:https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14 URL:https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14 MISC:https://github.com/goauthentik/authentik/pull/7666 URL:https://github.com/goauthentik/authentik/pull/7666 MISC:https://github.com/goauthentik/authentik/pull/7668 URL:https://github.com/goauthentik/authentik/pull/7668 MISC:https://github.com/goauthentik/authentik/pull/7669 URL:https://github.com/goauthentik/authentik/pull/7669 MISC:https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4 URL:https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4 MISC:https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5 URL:https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5 MISC:https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3 URL:https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20231113	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 (20231113)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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