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TI-2022-07586 Aliases CVE-2022-23527

Open Redirect in oidc_validate_redirect_url()

Priority LOW 29CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-601.

Summary

mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00941 61st percentileScored 2026-11-07
Fix Partial mod_auth_openidc (zmartzone): 2.4.12.2Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenIDCmod_auth_openidcbefore 2.4.12.22.4.12.2Patch availableCNA
  • mod_auth_openidc VendorOpenIDC Affected before 2.4.12.2 Fixed in 2.4.12.2 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:openidc:mod_auth_openidc:*:*:*:*:*:*:*:*before 2.4.12.2VulnerableOpenIDC
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:openidc:mod_auth_openidc:*:*:*:*:*:*:*:* Versions before 2.4.12.2 Vulnerable ·OpenIDC
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA mod_auth_openidc (zmartzone) Fixed in 2.4.12.2

Red Hat 2 advisories

  • RHSA-2023:6940 Released 2023-11-14 · Red Hat rating Moderate
    mod_auth_openidc:2.3 security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) cjose-0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3, cjose-0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3, cjose-0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3 +11
  • RHSA-2023:6365 Released 2023-11-07 · Red Hat rating Moderate
    mod_auth_openidc security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 9) mod_auth_openidc-2.4.9.4-4.el9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:6940
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:6365

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-23527

References

Advisory 1

Other 2

  • TI-2024-16331 Denial of service when manipulating mod_auth_openidc_session_chunks cookie in mod_auth_openidc CVSS 3.1HIGH 7.5
  • TI-2017-04220 The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc)… CVSS 3.0HIGH 8.6
  • TI-2017-03971 The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc)… CVSS 3.0HIGH 8.6
  • TI-2023-13144 mod_auth_openidc core dump when OIDCStripCookies is set and an empty Cookie header is supplied CVSS 3.1HIGH 7.5
  • TI-2017-03968 Mod_auth_openidc.c in the Ping Identity OpenID Connect authentication module for Apache… CVSS 3.1HIGH 7.5
  • TI-2021-03944 Uncontrolled resource consumption in OpenIDC mod_auth_openidc CVSS 3.1HIGH 7.5
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences