CVE-2017-6413: openidc mod_auth_openidc Improper Authentication
CVSS: 8.6v3.0HighModified
AliasesUBUNTU-CVE-2017-6413DEBIAN-CVE-2017-6413
Published 02-03-2017Last modified 05-08-2024
Vulnerability summary
CVE-2017-6413 is a high (CVSS 8.6) Improper Authentication vulnerability in openidc mod_auth_openidc. EPSS estimates a 4.25% chance of exploitation in the next 30 days, higher than 90.9% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.0 (NVD)EPSS score
4.25%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 02-03-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.6Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.6HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated8.6HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
4.25%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.25% on 19-09-2026
19-09-202619-10-2026
EPSS score4.25%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- libapache2-mod-auth-openidc< 2.1.6-1
Openidc1 product
- mod_auth_openidc≤ 2.1.5
Ubuntu1 product
- libapache2-mod-auth-openidcAll versions (No fix recorded)
3 vendors · 3 products
References
11 links- github.com/pingidentity/mod_auth_openidc/blob/master/ChangeLogX Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- github.com/pingidentity/mod_auth_openidc/releases/tag/v2.1.6X Refsource CONFIRMPatchRelease NotesThird Party Advisory
- github.com/pingidentity/mod_auth_openidc/commit/21e3728a825c41ab41efa75e664108051bb9665eX Refsource CONFIRMIssue TrackingPatchThird Party Advisory
