CVE-2019-3878
high-risk
Published 2019-03-26
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.
Do I need to act?
~
2.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10
High
NETWORK
/ LOW complexity
Affected Products (12)
Affected Vendors
References (18)
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0746
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0766
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878
Third Party Advisory
https://usn.ubuntu.com/3924-1/
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0746
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0766
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878
Third Party Advisory
https://usn.ubuntu.com/3924-1/
50
/ 100
high-risk
Severity
28/34 · Critical
Exploitability
5/34 · Minimal
Exposure
17/34 · Moderate