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CVE-2019-3878

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2019-0985-01
Posted May 7, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-0985-01 - The mod_auth_mellon module for the Apache HTTP Server is an authentication service that implements the SAML 2.0 federation protocol. The module grants access based on the attributes received in assertions generated by an IdP server. Issues addressed include a bypass vulnerability.

tags | advisory, web, protocol, bypass
systems | linux, redhat
advisories | CVE-2019-3878
MD5 | cdd50a0b41f24da375b6970e634d6eb9
Red Hat Security Advisory 2019-0766-01
Posted Apr 16, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-0766-01 - The mod_auth_mellon module for the Apache HTTP Server is an authentication service that implements the SAML 2.0 federation protocol. The module grants access based on the attributes received in assertions generated by an IdP server. Issues addressed include a bypass vulnerability.

tags | advisory, web, protocol, bypass
systems | linux, redhat
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | d6979d608903f62f31aa42621e0f5b8e
Red Hat Security Advisory 2019-0746-01
Posted Apr 11, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-0746-01 - The Apache HTTP Server is a powerful, efficient, and extensible web server. The httpd24 packages provide a recent stable release of version 2.4 of the Apache HTTP Server, along with the mod_auth_kerb module. Issues addressed include a bypass vulnerability.

tags | advisory, web, bypass
systems | linux, redhat
advisories | CVE-2019-0211, CVE-2019-3878
MD5 | 7b1d8e194f2b9021ebf0ab857ca5e4d2
Ubuntu Security Notice USN-3924-1
Posted Mar 28, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3924-1 - It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to redirect a user to a malicious URL. It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to access sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | d398943a9939c7638ab540f4147bab7c
Debian Security Advisory 4414-1
Posted Mar 25, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4414-1 - Several issues have been discovered in Apache module auth_mellon, which provides SAML 2.0 authentication.

tags | advisory
systems | linux, debian
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | c9b15b30966a09c6fb00b5a662f07e38
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