2023-11-21 23:00:21 +00:00

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{
"id": "CVE-2023-48228",
"sourceIdentifier": "security-advisories@github.com",
"published": "2023-11-21T21:15:08.477",
"lastModified": "2023-11-21T21:15:08.477",
"vulnStatus": "Received",
"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."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-287"
}
]
}
],
"references": [
{
"url": "https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/pull/7666",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/pull/7668",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/pull/7669",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3",
"source": "security-advisories@github.com"
}
]
}