mod_auth_openidc up to 2.4.12.1 Regular Expression oidc_validate_redirect_url Logout

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability was found in mod_auth_openidc up to 2.4.12.1. It has been declared as problematic. The impacted element is the function oidc_validate_redirect_url of the component Regular Expression Handler. Such manipulation of the argument Logout leads to redirect. This vulnerability is documented as CVE-2022-23527. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in mod_auth_openidc up to 2.4.12.1 and classified as problematic. Affected by this issue is the function oidc_validate_redirect_url of the component Regular Expression Handler. The manipulation of the argument logout with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

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.

The weakness was released 12/14/2022 as GHSA-q6f2-285m-gr53. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-23527 since 01/19/2022. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1204.001.

The vulnerability scanner Nessus provides a plugin with the ID 211299 (Fedora 37 : mod_auth_openidc (2022-e139408490)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.12.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (211299) and CERT Bund (WID-SEC-2023-2853). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source CentOS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • Red Hat OpenShift
  • Meinberg LANTIME

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 4.7
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211299
Nessus Name: Fedora 37 : mod_auth_openidc (2022-e139408490)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mod_auth_openidc 2.4.12.2

Timelineinfo

01/19/2022 🔍
12/14/2022 +329 days 🔍
12/14/2022 +0 days 🔍
12/30/2025 +1112 days 🔍

Sourcesinfo

Advisory: GHSA-q6f2-285m-gr53
Status: Confirmed

CVE: CVE-2022-23527 (🔍)
GCVE (CVE): GCVE-0-2022-23527
GCVE (VulDB): GCVE-100-215816
CERT Bund: WID-SEC-2023-2853 - Red Hat Enterprise Linux: Mehrere Schwachstellen

Entryinfo

Created: 12/14/2022 23:52
Updated: 12/30/2025 23:33
Changes: 12/14/2022 23:52 (51), 01/12/2023 16:31 (11), 11/15/2024 16:24 (16), 04/28/2025 15:05 (3), 12/30/2025 23:33 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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