CVE-2019-11202: Github.com/rancher/rancher Rancher Recreates Default User With Vulnerability

CRITICAL
Advisory Identifier: GHSA-xh8x-j8h3-m5ph
CVSS 9.8
CWE-287
Published
Advisory Summary

CVE-2019-11202 is a CRITICAL (CVSS 9.8) rancher recreates default user with vulnerability (CWE-287: Improper Authentication) affecting Github.com/rancher/rancher libraries in the Go ecosystem. The issue involves rancher recreates default user with known password despite deletion. Remediation is available by upgrading affected packages to version 2.2.2.

CVE-2019-11202 at a Glance

CVE Identifier CVE-2019-11202
GHSA Identifier GHSA-xh8x-j8h3-m5ph
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-287: Improper Authentication
Affected Product Github.com/rancher/rancher
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2019-11202

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: Latest secure release
Upgrade github.com/rancher/rancher to Latest secure release
github.com/rancher/rancher fixed: Latest secure release
Upgrade github.com/rancher/rancher to Latest secure release
github.com/rancher/rancher fixed: 2.2.2
Upgrade github.com/rancher/rancher to 2.2.2
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-2019-11202, 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 2.2.2), 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-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. 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

An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, and v2.2.0 through 2.2.1. When Rancher starts for the first time, it creates a default admin user with a well-known password. After initial setup, the Rancher administrator may choose to delete this default admin user. If Rancher is restarted, the default admin user will be recreated with the well-known default password. An attacker could exploit this by logging in with the default admin credentials. This can be mitigated by deactivating the default admin user rather than completing deleting them.

CVE-2019-11202 Affected Github.com/rancher/rancher Versions

3 component(s)
Fixed Versions:
2.2.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/rancher/rancher
Go
≥ 2.0.0
≤ 2.0.13
github.com/rancher/rancher
Go
≥ 2.1.0
≤ 2.1.8
github.com/rancher/rancher
Go
≥ 2.2.0
< 2.2.2
2.2.2

References

Frequently Asked Questions

What is CVE-2019-11202?
CVE-2019-11202 is a security vulnerability in Github.com/rancher/rancher involving Rancher Recreates Default User With Known Password Despite Deletion under CWE-287: Improper Authentication.
Which Github.com/rancher/rancher versions are affected?
Affected versions include releases prior to 2.2.2 across affected packages: github.com/rancher/rancher.
What version fixes CVE-2019-11202?
Upgrading to 2.2.2 (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 Latest secure release, 2.2.2. Upgrade your dependency to Latest secure release, 2.2.2 or later.
What is the CVSS score of CVE-2019-11202?
CVE-2019-11202 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-11202?
CVE-2019-11202 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check Go dependencies for CVE-2019-11202?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xh8x-j8h3-m5ph",
  "modified" : "2024-06-10T19:29:16Z",
  "published" : "2022-05-24T16:51:43Z",
  "aliases" : [ "CVE-2019-11202" ],
  "summary" : "Rancher Recreates Default User With Known Password Despite Deletion",
  "details" : "An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, and v2.2.0 through 2.2.1. When Rancher starts for the first time, it creates a default admin user with a well-known password. After initial setup, the Rancher administrator may choose to delete this default admin user. If Rancher is restarted, the default admin user will be recreated with the well-known default password. An attacker could exploit this by logging in with the default admin credentials. This can be mitigated by deactivating the default admin user rather than completing deleting them.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "last_affected" : "2.0.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0"
      }, {
        "last_affected" : "2.1.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0"
      }, {
        "fixed" : "2.2.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-11202"
  }, {
    "type" : "WEB",
    "url" : "https://forums.rancher.com/t/rancher-release-v2-2-2-addresses-rancher-cve-2019-11202-and-stability-issues/13977"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-xh8x-j8h3-m5ph"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rancher/rancher"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2024-2784"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T21:40:20Z",
    "nvd_published_at" : "2019-07-30T17:15:00Z"
  }
}