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URL Redirection to Untrusted Site ('Open Redirect') in mod_auth_openidc

Moderate
zandbelt published GHSA-2pgf-8h6h-gqg2 Sep 3, 2021

Package

mod_auth_openidc (apache httpd)

Affected versions

<=2.4.9.3

Patched versions

>=2.4.9.4

Description

Impact

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.

Patches

The OIDCRedirectURLsAllowed setting must be applied to the target_link_uri parameter, see: 03e6bfb

Workarounds

NA

References

#672

For more information

If you have any questions or comments about this advisory, you can contact:

The maintainers, by opening an issue on this repository.

Severity

Moderate
4.7
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

CVE ID

CVE-2021-39191

Weaknesses

Credits