Source: libapache2-mod-auth-openidc Version: 2.4.4.1-2 Severity: important Tags: security upstream X-Debbugs-Cc: car...@debian.org, Debian Security Team <t...@security.debian.org>
Hi, The following vulnerability was published for libapache2-mod-auth-openidc. CVE-2021-32786[0]: | 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, `oidc_validate_redirect_url()` does not parse | URLs the same way as most browsers do. As a result, this function can | be bypassed and leads to an Open Redirect vulnerability in the logout | functionality. This bug has been fixed in version 2.4.9 by replacing | any backslash of the URL to redirect with slashes to address a | particular breaking change between the different specifications | (RFC2396 / RFC3986 and WHATWG). As a workaround, this vulnerability | can be mitigated by configuring `mod_auth_openidc` to only allow | redirection whose destination matches a given regular expression. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2021-32786 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32786 [1] https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-xm4c-5wm5-jqv7 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
