CVE-2019-14857

mod_auth_openidc: Open redirect in logout url when using URLs with leading slashes

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in mod_auth_openidc before version 2.4.0.1. An open redirect issue exists in URLs with trailing slashes similar to CVE-2019-3877 in mod_auth_mellon.

Se encontró una fallo en mod_auth_openidc anterior de la versión 2.4.0.1. Existe un problema de redireccionamiento abierto en las URL con barras diagonales en mod_auth_mellon.

An open redirect flaw was discovered in mod_auth_openidc, where it handles logout redirection. The module does not correctly validate the URL, allowing a URL with leading slashes to bypass the protection checks. A victim user may be tricked into visiting a trusted vulnerable web site, which would redirect them to another possibly malicious URL.

The mod_auth_openidc is an OpenID Connect authentication module for Apache HTTP Server. It enables an Apache HTTP Server to operate as an OpenID Connect Relying Party and/or OAuth 2.0 Resource Server. Issues addressed include an open redirection vulnerability.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-08-10 CVE Reserved
2019-11-26 CVE Published
2024-08-05 CVE Updated
2025-04-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

CAPEC

References (8)

URL	Tag	Source
https://groups.google.com/forum/#%21topic/mod_auth_openidc/boy1Ba3Gdk4	X_refsource_confirm
https://lists.debian.org/debian-lts-announce/2020/07/msg00028.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14857	2023-11-07
https://github.com/zmartzone/mod_auth_openidc/commit/5c15dfb08106c2451c2c44ce7ace6813c216ba75	2023-11-07
https://github.com/zmartzone/mod_auth_openidc/commit/ce37080c6aea30aabae8b4a9b4eea7808445cc8e	2023-11-07
https://github.com/zmartzone/mod_auth_openidc/pull/451	2023-11-07

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2019-14857	2020-09-29
https://bugzilla.redhat.com/show_bug.cgi?id=1760613	2020-09-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openidc Search vendor "Openidc"		Mod Auth Openidc Search vendor "Openidc" for product "Mod Auth Openidc"				< 2.4.0.1 Search vendor "Openidc" for product "Mod Auth Openidc" and version " < 2.4.0.1"		-		Affected