{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-48228","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2023-11-13T13:25:18.481Z","datePublished":"2023-11-21T20:48:32.552Z","dateUpdated":"2024-08-02T21:23:39.088Z"},"containers":{"cna":{"title":"OAuth2: PKCE can be fully circumvented","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3"},{"name":"https://github.com/goauthentik/authentik/pull/7666","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/pull/7666"},{"name":"https://github.com/goauthentik/authentik/pull/7668","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/pull/7668"},{"name":"https://github.com/goauthentik/authentik/pull/7669","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/pull/7669"},{"name":"https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6"},{"name":"https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5"},{"name":"https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14"},{"name":"https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5"}],"affected":[{"vendor":"goauthentik","product":"authentik","versions":[{"version":"< 2023.10.4","status":"affected"},{"version":"< 2023.8.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2023-11-21T20:48:32.552Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-fm34-v8xq-f2c3","discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T21:23:39.088Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3"},{"name":"https://github.com/goauthentik/authentik/pull/7666","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/pull/7666"},{"name":"https://github.com/goauthentik/authentik/pull/7668","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/pull/7668"},{"name":"https://github.com/goauthentik/authentik/pull/7669","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/pull/7669"},{"name":"https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6"},{"name":"https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5"},{"name":"https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14"},{"name":"https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5"}]}]}}