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Vulnerability Details : CVE-2018-5256

CoreOS Tectonic 1.7.x before 1.7.9-tectonic.4 and 1.8.x before 1.8.4-tectonic.3 mounts a direct proxy to the kubernetes cluster at /api/kubernetes/ which is accessible without authentication to Tectonic and allows an attacker to directly connect to the kubernetes API server. Unauthenticated users are able to list all Namespaces through the Console, resulting in an information disclosure. Tectonic's exposure of an unauthenticated API endpoint containing information regarding the internal state of the cluster can provide an attacker with information that may assist in other attacks against the cluster. For example, an attacker may not have the permissions required to list all namespaces in the cluster but can instead leverage this vulnerability to enumerate the namespaces and then begin to check each namespace for weak authorization policies that may allow further escalation of privileges.
Publish Date : 2018-05-18 Last Update Date : 2019-09-18
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Gain privilegesObtain Information
CWE ID 200

- Products Affected By CVE-2018-5256

# Product Type Vendor Product Version Update Edition Language
1 Application Redhat Tectonic 1.7.1-tectonic.1 Version Details Vulnerabilities
2 Application Redhat Tectonic 1.7.1-tectonic.1.0.0 Version Details Vulnerabilities
3 Application Redhat Tectonic 1.7.1-tectonic.2 Version Details Vulnerabilities
4 Application Redhat Tectonic 1.7.3-tectonic.1 Version Details Vulnerabilities
5 Application Redhat Tectonic 1.7.3-tectonic.2 Version Details Vulnerabilities
6 Application Redhat Tectonic 1.7.3-tectonic.3 Version Details Vulnerabilities
7 Application Redhat Tectonic 1.7.3-tectonic.4 Version Details Vulnerabilities
8 Application Redhat Tectonic 1.7.5-tectonic.1 Version Details Vulnerabilities
9 Application Redhat Tectonic 1.7.9-tectonic.1 Version Details Vulnerabilities
10 Application Redhat Tectonic 1.7.9-tectonic.2 Version Details Vulnerabilities
11 Application Redhat Tectonic 1.7.9-tectonic.3 Version Details Vulnerabilities
12 Application Redhat Tectonic 1.8.4-tectonic.1 Version Details Vulnerabilities
13 Application Redhat Tectonic 1.8.4-tectonic.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Redhat Tectonic 13

- References For CVE-2018-5256 CONFIRM CONFIRM

- Metasploit Modules Related To CVE-2018-5256

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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