Vulnerabilities > CVE-2021-39191

CVSS 6.1 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

LOW

Integrity impact

LOW

Availability impact

NONE

network

low complexity

openidc

fedoraproject

debian

NVD

Published: 2021-09-03

Updated: 2024-11-21

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.

Vulnerable Configurations

Part	Description	Count
Application	Openidc Openidc MOD Auth Openidc - Openidc MOD Auth Openidc 1.5 Openidc MOD Auth Openidc 1.5.1 Openidc MOD Auth Openidc 1.5.2 Openidc MOD Auth Openidc 1.5.3 Openidc MOD Auth Openidc 1.5.4 Openidc MOD Auth Openidc 1.5.5 Openidc MOD Auth Openidc 1.6.0 Openidc MOD Auth Openidc 1.7.0 Openidc MOD Auth Openidc 1.7.1 Openidc MOD Auth Openidc 1.7.2 Openidc MOD Auth Openidc 1.7.3 Openidc MOD Auth Openidc 1.8.0 Openidc MOD Auth Openidc 1.8.1 Openidc MOD Auth Openidc 1.8.2 Openidc MOD Auth Openidc 1.8.3 Openidc MOD Auth Openidc 1.8.4 Openidc MOD Auth Openidc 1.8.5 Openidc MOD Auth Openidc 1.8.6 Openidc MOD Auth Openidc 1.8.7 Openidc MOD Auth Openidc 1.8.8 Openidc MOD Auth Openidc 1.8.9 Openidc MOD Auth Openidc 1.8.10 Openidc MOD Auth Openidc 1.8.10.1 Openidc MOD Auth Openidc 1.8.10.2 Openidc MOD Auth Openidc 1.8.10.3 Openidc MOD Auth Openidc 2.0.0 Openidc MOD Auth Openidc 2.1.0 Openidc MOD Auth Openidc 2.1.1 Openidc MOD Auth Openidc 2.1.2 Openidc MOD Auth Openidc 2.1.3 Openidc MOD Auth Openidc 2.1.4 Openidc MOD Auth Openidc 2.1.5 Openidc MOD Auth Openidc 2.1.6 Openidc MOD Auth Openidc 2.1.13 Openidc MOD Auth Openidc 2.2.0 Openidc MOD Auth Openidc 2.3.0 Openidc MOD Auth Openidc 2.3.1 Openidc MOD Auth Openidc 2.3.2 Openidc MOD Auth Openidc 2.3.3 Openidc MOD Auth Openidc 2.3.4 Openidc MOD Auth Openidc 2.3.5 Openidc MOD Auth Openidc 2.3.6 Openidc MOD Auth Openidc 2.3.7 Openidc MOD Auth Openidc 2.3.8 Openidc MOD Auth Openidc 2.3.9 Openidc MOD Auth Openidc 2.3.10 Openidc MOD Auth Openidc 2.3.10.1 Openidc MOD Auth Openidc 2.3.10.2 Openidc MOD Auth Openidc 2.3.11 Openidc MOD Auth Openidc 2.4.0 Openidc MOD Auth Openidc 2.4.0.1 Openidc MOD Auth Openidc 2.4.0.2 Openidc MOD Auth Openidc 2.4.0.3 Openidc MOD Auth Openidc 2.4.0.4 Openidc MOD Auth Openidc 2.4.1 Openidc MOD Auth Openidc 2.4.2 Openidc MOD Auth Openidc 2.4.2.1 Openidc MOD Auth Openidc 2.4.3 Openidc MOD Auth Openidc 2.4.4 Openidc MOD Auth Openidc 2.4.4.1 Openidc MOD Auth Openidc 2.4.5 Openidc MOD Auth Openidc 2.4.6 Openidc MOD Auth Openidc 2.4.7 Openidc MOD Auth Openidc 2.4.7.1 Openidc MOD Auth Openidc 2.4.7.2 Openidc MOD Auth Openidc 2.4.8.1 Openidc MOD Auth Openidc 2.4.8.2 Openidc MOD Auth Openidc 2.4.8.3 Openidc MOD Auth Openidc 2.4.8.4 Openidc MOD Auth Openidc 2.4.9 Openidc MOD Auth Openidc 2.4.9.1 Openidc MOD Auth Openidc 2.4.9.2 Openidc MOD Auth Openidc 2.4.9.3	82
OS	Fedoraproject Fedoraproject Fedora 35 Fedoraproject Fedora 36	2
OS	Debian Debian Debian Linux 10.0	1

Vulnerabilities > CVE-2021-39191 {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Vulnerabilities","item":"https://cyber.vumetric.com/vulns/"},{"@type":"ListItem","position":2,"name":"CVE-2021-39191"}]}

Summary

Vulnerable Configurations

References

Vulnerabilities > CVE-2021-39191