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.
References (9)
Scores
CVSS v3
8.1
EPSS
0.0201
EPSS Percentile
83.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-305
CWE-287
Status
published
Products (12)
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
18.10
fedoraproject/fedora
29
fedoraproject/fedora
30
mod_auth_mellon_project/mod_auth_mellon
< 0.14.2
redhat/enterprise_linux
7.0
redhat/enterprise_linux_desktop
7.0
redhat/enterprise_linux_server
7.0
redhat/enterprise_linux_server_aus
7.6
redhat/enterprise_linux_server_eus
7.6
... and 2 more
Published
Mar 26, 2019
Tracked Since
Feb 18, 2026