What is the CVSS score of CVE-2019-3878?

CVE-2019-3878 has a CVSS 3.0 base score of 8.1 (High). CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.0%.

Is there a public PoC exploit available for CVE-2019-3878?

Yes, a public proof-of-concept exploit is available for CVE-2019-3878. Prioritise patching immediately. EPSS: 3.0%.

Is there a patch available for CVE-2019-3878?

Yes, a patch is available for CVE-2019-3878. Update the affected software to the latest version immediately.

Mod Auth Mellon CVE-2019-3878

HIGH

Authentication Bypass by Primary Weakness (CWE-305)

2019-03-26 secalert@redhat.com

Authentication Bypass Apache Mod Auth Mellon Fedora Enterprise Linux Enterprise Linux Desktop Enterprise Linux Server Enterprise Linux Server Aus Enterprise Linux Server Eus Enterprise Linux Server Tus Enterprise Linux Workstation Ubuntu Linux

8.1

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

8.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 26, 2019 - 18:29 nvd

HIGH 8.1

DescriptionNVD

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.

AnalysisAI

A vulnerability was found in mod_auth_mellon before v0.14.2. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-305. 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. Affected products include: Mod Auth Mellon Project Mod Auth Mellon, Fedoraproject Fedora, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.