8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
mod_auth_mellon is vulnerable to authentication bypass. Remote unauthenticated attackers could bypass the authentication mechanism via HTTP headers that are normally used to start the special SAML ECP.
access.redhat.com/errata/RHBA-2019:0959
access.redhat.com/errata/RHSA-2019:0746
access.redhat.com/errata/RHSA-2019:0766
access.redhat.com/errata/RHSA-2019:0985
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1697487
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878
github.com/Uninett/mod_auth_mellon/pull/196
lists.fedoraproject.org/archives/list/[email protected]/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
lists.fedoraproject.org/archives/list/[email protected]/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/
usn.ubuntu.com/3924-1/
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P