High
Security advisory
The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.6 for the Apache HTTP Server does not skip OIDC_CLAIM_ and OIDCAuthNHeader headers in an "AuthType oauth20" configuration, which allows remote attackers to bypass authentication via crafted HTTP traffic.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-6413
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:24 UTC · Revision 1
Source evidence
The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.6 for the Apache HTTP Server does not skip OIDC_CLAIM_ and OIDCAuthNHeader headers in an "AuthType oauth20" configuration, which allows remote attackers to bypass authentication via crafted HTTP traffic.
osv:CVE-2017-6413
Complete source record
{
"id": "4f9980efccd5691300389ecf64719bac1097c772068f05cab2def649349a1ef8",
"url": "https://osv.dev/vulnerability/CVE-2017-6413",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-6413",
"summary": "The \"OpenID Connect Relying Party and OAuth 2.0 Resource Server\" (aka mod_auth_openidc) module before 2.1.6 for the Apache HTTP Server does not skip OIDC_CLAIM_ and OIDCAuthNHeader headers in an \"AuthType oauth20\" configuration, which allows remote attackers to bypass authentication via crafted HTTP traffic.",
"evidence": "osv:CVE-2017-6413",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-6413",
"aliases": [
"CVE-2017-6413"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openidc/mod_auth_openidc",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "e81822a7d5f5bdf04ba03ca92680821893303850"
},
{
"fixed": "21e3728a825c41ab41efa75e664108051bb9665e"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openidc:mod_auth_openidc:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.1.5"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "21e3728a825c41ab41efa75e664108051bb9665e"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "21e3728a825c41ab41efa75e664108051bb9665e"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v2.1.6"
}
]
}
}
],
"versions": [
"v2.1.5",
"v2.1.4",
"v2.1.3",
"v2.1.2",
"v2.1.1",
"v2.1.0",
"v2.0.0",
"v2.0.0rc4",
"v2.0.0rc1",
"v1.8.10",
"v1.8.9",
"v1.8.8",
"v1.8.7",
"v1.8.6",
"v1.8.5",
"v1.8.4",
"v1.8.3",
"v1.8.2",
"v1.8.1",
"v1.8.0",
"v1.7.0",
"v1.6.0",
"v1.5.5",
"v1.5.4",
"v1.5.3",
"v1.5.2",
"v1.5.1",
"v1.5"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-6413.json",
"vanir_signatures": [
{
"id": "CVE-2017-6413-15b46186",
"digest": {
"threshold": 0.9,
"line_hashes": [
"252592132319974117317083050032030932584",
"245854842247398335139041577994342478702",
"249301519142228043284928015001881791252",
"12496067092907532332299473183032362101"
]
},
"source": "https://github.com/openidc/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"target": {
"file": "src/mod_auth_openidc.h"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2017-6413-9eab6cc5",
"digest": {
"length": 395,
"function_hash": "235345058986512073726030606729054536041"
},
"source": "https://github.com/openidc/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"target": {
"file": "src/mod_auth_openidc.c",
"function": "oidc_scrub_headers"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2017-6413-b96c5034",
"digest": {
"length": 2113,
"function_hash": "101436493843902703457223292790871171117"
},
"source": "https://github.com/openidc/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"target": {
"file": "src/oauth.c",
"function": "oidc_oauth_check_userid"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2017-6413-bc595be3",
"digest": {
"threshold": 0.9,
"line_hashes": [
"300885929279668652631216083908378489803",
"86757556201774335385049608529931441491",
"232568871630841356922068682392364302614"
]
},
"source": "https://github.com/openidc/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"target": {
"file": "src/oauth.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2017-6413-efae51a6",
"digest": {
"threshold": 0.9,
"line_hashes": [
"231156241331446138400413118183185546010",
"328211974302038262523992695704363018362",
"75708323700389784035179034936157320920",
"339048421168395487366516423266575270949"
]
},
"source": "https://github.com/openidc/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"target": {
"file": "src/mod_auth_openidc.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:21:14Z"
}
}
],
"modified": "2026-10-24T14:21:14.455094128Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2V3HIGXMUKJGOBMAQAQPGC7G5YYWSUVA/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EJXBG3DG2FUYFGTUTSJFMPIINVFKKB4Z/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTWUMQ46GZY3O4WU4JCF333LN53R2XQH/",
"https://access.redhat.com/errata/RHSA-2019:2112",
"https://github.com/pingidentity/mod_auth_openidc/blob/master/ChangeLog",
"https://github.com/pingidentity/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665e",
"https://github.com/pingidentity/mod_auth_openidc/releases/tag/v2.1.6"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2017-6413",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443587,
"published_at": "2017-03-02T06:59:01.217+00:00"
}