What is the CVSS score of CVE-2018-20405?

CVE-2018-20405 has a CVSS 3.1 base score of 2.7 (Low). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.8%.

Is there a public PoC exploit available for CVE-2018-20405?

Yes, a public proof-of-concept exploit is available for CVE-2018-20405. Prioritise patching immediately. EPSS: 0.8%.

Bigtree CVE-2018-20405

LOW

Authorization Bypass Through User-Controlled Key (CWE-639)

2018-12-23 cve@mitre.org

Authentication Bypass XSS Bigtree

2.7

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

2.7 LOW

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

Primary rating from Vendor (mitre) · only source for this CVE.

CVSS VectorVendor: mitre

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Dec 23, 2018 - 23:29 cve.org

LOW 2.7

DescriptionCVE.org

BigTree 4.3 allows full path disclosure via authenticated admin/news/ input that triggers a syntax error. NOTE: This has been disputed with the following reasoning: "The issue reported requires full developer level access to the content management system where cross site scripting is not an issue -- you already have full control of the CMS including running arbitrary PHP.

AnalysisAI

BigTree 4.3 allows full path disclosure via authenticated admin/news/ input that triggers a syntax error. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-639. BigTree 4.3 allows full path disclosure via authenticated admin/news/ input that triggers a syntax error. NOTE: This has been disputed with the following reasoning: "The issue reported requires full developer level access to the content management system where cross site scripting is not an issue -- you already have full control of the CMS including running arbitrary PHP. Affected products include: Bigtreecms Bigtree.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.