CVE-2019-3878
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 3.0%
exploitation probability
3.0%top 13% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
uninett · mod_auth_mellonReferences
https://access.redhat.com/errata/RHBA-2019:0959https://access.redhat.com/errata/RHSA-2019:0746https://access.redhat.com/errata/RHSA-2019:0766https://access.redhat.com/errata/RHSA-2019:0985https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878https://github.com/Uninett/mod_auth_mellon/pull/196https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/https://usn.ubuntu.com/3924-1/