Open Redirect Affecting mod_auth_openidc:2.3/cjose-devel package, versions <0:0.6.1-2.module+el8+2454+f890a43a


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.14% (50th percentile)

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  • Snyk IDSNYK-RHEL8-MODAUTHOPENIDC-4234027
  • published29 Jul 2021
  • disclosed22 Jul 2021

Introduced: 22 Jul 2021

CVE-2021-32786  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade RHEL:8 mod_auth_openidc:2.3/cjose-devel to version 0:0.6.1-2.module+el8+2454+f890a43a or higher.
This issue was patched in RHSA-2022:1823.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_auth_openidc:2.3/cjose-devel package and not the mod_auth_openidc:2.3/cjose-devel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1