CVE-2021-39191 (GCVE-0-2021-39191)

Vulnerability from cvelistv5 – Published: 2021-09-03 00:00 – Updated: 2024-08-04 01:58
VLAI?
Title
URL Redirection to Untrusted Site ('Open Redirect') in mod_auth_openidc
Summary
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.
Severity ?
4.7 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
Impacted products
Vendor Product Version
zmartzone mod_auth_openidc Affected: <=2.4.9.3
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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        "discovery": "UNKNOWN"
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.