CVE-2019-3878

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 v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

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CVSS v3.0 : HIGH

V3 Legend

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Uninett/mod_auth_mellon/pull/196	Exploit Third Party Advisory Patch
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878	Issue Tracking Patch Third Party Advisory
https://usn.ubuntu.com/3924-1/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/	Mailing List Release Notes Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0746	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0766	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0985
https://access.redhat.com/errata/RHBA-2019:0959

Configurations

Configuration 1 (hide)

cpe:2.3:a:mod_auth_mellon_project:mod_auth_mellon:*:*:*:*:*:apache:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:30:::::::*
	cpe:2.3:o:fedoraproject:fedora:29:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::*

Configuration 4 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*

Information

Published : 2019-03-26 11:29

Updated : 2019-05-07 02:29

NVD link : CVE-2019-3878

Mitre link : CVE-2019-3878

JSON object : View

CWE

CWE-287

Improper Authentication

Products Affected

redhat

enterprise_linux_desktop
enterprise_linux
enterprise_linux_workstation
enterprise_linux_server_aus
enterprise_linux_server_tus
enterprise_linux_server_eus
enterprise_linux_server

mod_auth_mellon_project

mod_auth_mellon

fedoraproject

fedora

canonical

ubuntu_linux

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