This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-39191 →
Categories
DEBIAN-CVE-2021-39191

mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authentic...

Original description

The description as published by the source.

mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In versions prior to 2.4.9.4, the 3rd-party init SSO functionality of mod_auth_openidc was reported to be vulnerable to an open redirect attack by supplying a crafted URL in the target_link_uri parameter. A patch in version 2.4.9.4 made it so that the OIDCRedirectURLsAllowed setting must be applied to the target_link_uri parameter. There are no known workarounds aside from upgrading to a patched version.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libapache2-mod-auth-openidc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.9.4-1"}]}]
Debian:13 libapache2-mod-auth-openidc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.9.4-1"}]}]
Debian:14 libapache2-mod-auth-openidc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.9.4-1"}]}]

References

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