Description
The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.5 for the Apache HTTP Server does not skip OIDC_CLAIM_ and OIDCAuthNHeader headers in an "OIDCUnAuthAction pass" configuration, which allows remote attackers to bypass authentication via crafted HTTP traffic.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libapache2-mod-auth-openidc | 2.1.5-1 | — |
| Debian 13 | libapache2-mod-auth-openidc | 2.1.5-1 | — |
| Debian 12 | libapache2-mod-auth-openidc | 2.1.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | libapache2-mod-auth-openidc | No fix yet | — |
References
- https://github.com/pingidentity/mod_auth_openidc/releases/tag/v2.1.5
- https://github.com/pingidentity/mod_auth_openidc/blob/master/ChangeLog
- https://github.com/pingidentity/mod_auth_openidc/issues/222
- FEDORA-2019-7b06f18a10 vendor-advisory
- FEDORA-2019-23638d42f3 vendor-advisory
- FEDORA-2019-a25d5df3b4 vendor-advisory