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 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3 : HIGH

V3 Legend

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

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

6.8^/10

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://access.redhat.com/errata/RHBA-2019:0959
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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878	Issue Tracking Patch Third Party Advisory
https://github.com/Uninett/mod_auth_mellon/pull/196	Exploit Patch Third Party Advisory
https://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/	Third Party Advisory
https://access.redhat.com/errata/RHBA-2019:0959
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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878	Issue Tracking Patch Third Party Advisory
https://github.com/Uninett/mod_auth_mellon/pull/196	Exploit Patch Third Party Advisory
https://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/	Third Party Advisory

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

Configuration 3 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux: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_server_aus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*

Configuration 4 (hide)

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

History

21 Nov 2024, 04:42

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/errata/RHBA-2019:0959 -~~	() https://access.redhat.com/errata/RHBA-2019:0959 -
References	~~() https://access.redhat.com/errata/RHSA-2019:0746 - Third Party Advisory~~	() https://access.redhat.com/errata/RHSA-2019:0746 - Third Party Advisory
References	~~() https://access.redhat.com/errata/RHSA-2019:0766 - Third Party Advisory~~	() https://access.redhat.com/errata/RHSA-2019:0766 - Third Party Advisory
References	~~() https://access.redhat.com/errata/RHSA-2019:0985 -~~	() https://access.redhat.com/errata/RHSA-2019:0985 -
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878 - Issue Tracking, Patch, Third Party Advisory~~	() https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878 - Issue Tracking, Patch, Third Party Advisory
References	~~() https://github.com/Uninett/mod_auth_mellon/pull/196 - Exploit, Third Party Advisory, Patch~~	() https://github.com/Uninett/mod_auth_mellon/pull/196 - Exploit, Patch, Third Party Advisory
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/ -
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/ -
References	~~() https://usn.ubuntu.com/3924-1/ - Third Party Advisory~~	() https://usn.ubuntu.com/3924-1/ - Third Party Advisory

07 Nov 2023, 03:10

Type	Values Removed	Values Added
References	{'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/', 'name': 'FEDORA-2019-db1e9b3002', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'} {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/', 'name': 'FEDORA-2019-2d8ee47f61', 'tags': ['Mailing List', 'Release Notes', 'Third Party Advisory'], 'refsource': 'FEDORA'}	() https://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/ -

Information

Published : 2019-03-26 18:29

Updated : 2024-11-21 04:42

NVD link : CVE-2019-3878

Mitre link : CVE-2019-3878

CVE.ORG link : CVE-2019-3878

JSON object : View

Products Affected

redhat

enterprise_linux_server_tus
enterprise_linux_server_eus
enterprise_linux_server_aus
enterprise_linux
enterprise_linux_workstation
enterprise_linux_desktop
enterprise_linux_server

canonical

ubuntu_linux

mod_auth_mellon_project

mod_auth_mellon

fedoraproject

fedora

CWE

CWE-305

Authentication Bypass by Primary Weakness

CWE-287

Improper Authentication

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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."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad en mod_auth_mellon, en versiones anteriores a la v0.14.2. Si Apache est\u00e1 configurado como proxy inverso y mod_auth_mellon est\u00e1 configurado para que solo deje acceder a los usuarios autenticados (con la directiva \"require valid-user\"), la adici\u00f3n de cabeceras HTTP especiales que se suelen emplear para iniciar el SAML ECP especial (no basado en el navegador) puede emplearse para omitir la autenticaci\u00f3n."}], "lastModified": "2024-11-21T04:42:46.800", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mod_auth_mellon_project:mod_auth_mellon:*:*:*:*:*:apache:*:*", "vulnerable": true, "matchCriteriaId": "8FF38978-846A-409A-BEC7-81EADDF30F04", "versionEndExcluding": "0.14.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D100F7CE-FC64-4CC6-852A-6136D72DA419"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97A4B8DF-58DA-4AB6-A1F9-331B36409BA3"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF77CDCF-B9C9-427D-B2BF-36650FB2148C"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}

8.1 /10