RHSA-2019:0766 — Security Advisory
Red Hat Security Advisory: mod_auth_mellon security and bug fix update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · April 16, 2019
Updated · June 28, 2026
Topic
An update for mod_auth_mellon is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
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.
Security Fix(es):
-
mod_auth_mellon: authentication bypass in ECP flow (CVE-2019-3878)
-
mod_auth_mellon: open redirect in logout url when using URLs with backslashes (CVE-2019-3877)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
- mod_auth_mellon Cert files name wrong when hostname contains a number (fixed in upstream package) (BZ#1697487)