CVE-2019-6287: Github.com/rancher/rancher Rancher Project Members Have Continued Vulnerability

HIGH
Advisory Identifier: GHSA-6r7x-4q7g-h83j
Share
CVSS 8.1
CWE-269
Published
Advisory Summary

CVE-2019-6287 is a HIGH (CVSS 8.1) rancher project members have continued vulnerability (CWE-269: Improper Privilege Management) affecting Github.com/rancher/rancher libraries in the Go ecosystem. The issue involves rancher project members have continued access to namespaces after being removed from them. Remediation is available by upgrading affected packages to version 2.1.6.

CVE-2019-6287 at a Glance

CVE Identifier CVE-2019-6287
GHSA Identifier GHSA-6r7x-4q7g-h83j
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-269: Improper Privilege Management
Affected Product Github.com/rancher/rancher
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2019-6287

To remediate this vulnerability, upgrade all affected Github.com/rancher/rancher dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/rancher/rancher fixed: 2.1.6 
Upgrade github.com/rancher/rancher to 2.1.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/rancher/rancher

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-6287, inspect your project dependencies for Github.com/rancher/rancher:

inspect dependencies for github.com/rancher/rancher

Analyze the terminal output to locate any version of Github.com/rancher/rancher in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.6), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-269: Improper Privilege Management, where the product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. In Github.com/rancher/rancher, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In Rancher 2.0.0 through 2.1.5, project members have continued access to create, update, read, and delete namespaces in a project after they have been removed from it.

CVE-2019-6287 Affected Github.com/rancher/rancher Versions

1 component(s)
Fixed Versions:
2.1.6
Product / Package Ecosystem Affected Versions Fixed Version
github.com/rancher/rancher
golang/github.com/rancher/rancher
Go
≥ 2.0.0
< 2.1.6
2.1.6

References

NVD — CVE-2019-6287 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6287
Github.com/rancher/rancher Source Repository REPOSITORY
https://github.com/rancher/rancher/issues/17244
Github.com/rancher/rancher Source Repository REPOSITORY
https://github.com/rancher/rancher/issues/17724
forums.rancher.com/t/rancher-release-v... WEB
https://forums.rancher.com/t/rancher-release-v2-1-6/13148
Github.com/rancher/rancher Security Information SECURITY
https://forums.rancher.com/t/rancher-security-announcement-cve-2018-20321-and-cve-2019-6287/13149
Github.com/rancher/rancher Source Repository REPOSITORY
https://github.com/rancher/rancher
Github.com/rancher/rancher Security Information SECURITY
https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11

Frequently Asked Questions

What is CVE-2019-6287?
CVE-2019-6287 is a security vulnerability in Github.com/rancher/rancher involving Rancher Project Members Have Continued Access to Namespaces After Being Removed From Them under CWE-269: Improper Privilege Management.
Which Github.com/rancher/rancher versions are affected?
Affected versions include releases prior to 2.1.6 across affected packages: github.com/rancher/rancher.
What version fixes CVE-2019-6287?
Upgrading to 2.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/rancher/rancher affected?
Yes, github.com/rancher/rancher is affected in releases prior to 2.1.6. Upgrade your dependency to 2.1.6 or later.
What is the CVSS score of CVE-2019-6287?
CVE-2019-6287 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2019-6287?
CVE-2019-6287 is classified under CWE-269: Improper Privilege Management (The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.).
How can I check Go dependencies for CVE-2019-6287?
Run the dependency tree command: 'inspect dependencies for github.com/rancher/rancher'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6r7x-4q7g-h83j",
  "modified" : "2024-04-24T21:03:07Z",
  "published" : "2022-05-13T01:02:31Z",
  "aliases" : [ "CVE-2019-6287" ],
  "summary" : "Rancher Project Members Have Continued Access to Namespaces After Being Removed From Them",
  "details" : "In Rancher 2.0.0 through 2.1.5, project members have continued access to create, update, read, and delete namespaces in a project after they have been removed from it.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.1.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.1.5"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-6287"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/issues/17244"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/issues/17724"
  }, {
    "type" : "WEB",
    "url" : "https://forums.rancher.com/t/rancher-release-v2-1-6/13148"
  }, {
    "type" : "WEB",
    "url" : "https://forums.rancher.com/t/rancher-security-announcement-cve-2018-20321-and-cve-2019-6287/13149"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rancher/rancher"
  }, {
    "type" : "WEB",
    "url" : "https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-269" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T21:03:07Z",
    "nvd_published_at" : "2019-04-10T15:29:00Z"
  }
}