CVE-2019-3878

mod_auth_mellon: authentication bypass in ECP flow

Published Mar 26, 2019 CVSS 3.0 · 8.1 High EPSS 3.0% KEV · Not listed
Description
A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-4414-1 libapache2-mod-auth-mellon security update
EUVD EUVD EUVD-2019-13489 A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.
Ubuntu USN Ubuntu USN USN-3924-1 mod_auth_mellon vulnerabilities
Ubuntu USN Ubuntu USN USN-4597-1 mod_auth_mellon vulnerabilities
History

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