CVE-2018-1000226: Cobbler Cobbler Improper Validation Of Security Vulnerability

CRITICAL
Advisory Identifier: GHSA-f88q-22g8-frcg
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CVSS 9.8
CWE-732
Published
Advisory Summary

CVE-2018-1000226 is a CRITICAL (CVSS 9.8) cobbler improper validation of security vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) affecting Cobbler libraries in the PyPI ecosystem. The issue involves cobbler improper validation of security tokens. Remediation is available by upgrading affected packages to version 3.0.0.

CVE-2018-1000226 at a Glance

CVE Identifier CVE-2018-1000226
GHSA Identifier GHSA-f88q-22g8-frcg
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-732: Incorrect Permission Assignment for Critical Resource
Affected Product Cobbler
Package Ecosystem PyPI
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-2018-1000226

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

cobbler fixed: 3.0.0 
pip install cobbler>=3.0.0
Verify Direct and Transitive Dependencies

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

pip show cobbler

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2018-1000226, inspect your installed packages using pip:

pip show cobbler

Analyze the terminal output to locate any version of Cobbler in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.0), your application is affected.

Note: The pip show cobbler command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-732: Incorrect Permission Assignment for Critical Resource, where the product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. In Cobbler, 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

Cobbler version Verified as present in Cobbler versions 2.6.11+, but code inspection suggests at least 2.0.0+ or possibly even older versions may be vulnerable contains a Incorrect Access Control vulnerability in XMLRPC API (/cobbler_api) that can result in Privilege escalation, data manipulation or exfiltration, LDAP credential harvesting. This attack appear to be exploitable via "network connectivity". Taking advantage of improper validation of security tokens in API endpoints. Please note this is a different issue than CVE-2018-10931.

CVE-2018-1000226 Affected Cobbler Versions

1 component(s)
Fixed Versions:
3.0.0
Product / Package Ecosystem Affected Versions Fixed Version
cobbler
pypi/cobbler
PyPI
< 3.0.0
3.0.0

References

NVD — CVE-2018-1000226 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1000226
Cobbler Source Repository REPOSITORY
https://github.com/cobbler/cobbler/issues/1916
Cobbler Source Repository REPOSITORY
https://github.com/cobbler/cobbler
movermeyer.com/2018-08-02-privileg... WEB
https://movermeyer.com/2018-08-02-privilege-escalation-exploits-in-cobblers-api

Frequently Asked Questions

What is CVE-2018-1000226?
CVE-2018-1000226 is a security vulnerability in Cobbler involving Cobbler Improper Validation of Security Tokens under CWE-732: Incorrect Permission Assignment for Critical Resource.
Which Cobbler versions are affected?
Affected versions include releases prior to 3.0.0 across affected packages: cobbler.
What version fixes CVE-2018-1000226?
Upgrading to 3.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is cobbler affected?
Yes, cobbler is affected in releases prior to 3.0.0. Upgrade your dependency to 3.0.0 or later.
What is the CVSS score of CVE-2018-1000226?
CVE-2018-1000226 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-2018-1000226?
CVE-2018-1000226 is classified under CWE-732: Incorrect Permission Assignment for Critical Resource (The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.).
How can I check PyPI dependencies for CVE-2018-1000226?
Run the dependency tree command: 'pip show cobbler'. 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-f88q-22g8-frcg",
  "modified" : "2023-10-06T01:48:06Z",
  "published" : "2022-05-13T01:48:35Z",
  "aliases" : [ "CVE-2018-1000226" ],
  "summary" : "Cobbler Improper Validation of Security Tokens",
  "details" : "Cobbler version Verified as present in Cobbler versions 2.6.11+, but code inspection suggests at least 2.0.0+ or possibly even older versions may be vulnerable contains a Incorrect Access Control vulnerability in XMLRPC API (/cobbler_api) that can result in Privilege escalation, data manipulation or exfiltration, LDAP credential harvesting. This attack appear to be exploitable via \"network connectivity\". Taking advantage of improper validation of security tokens in API endpoints. Please note this is a different issue than CVE-2018-10931.",
  "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" : "PyPI",
      "name" : "cobbler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.6.11"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1000226"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cobbler/cobbler/issues/1916"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cobbler/cobbler"
  }, {
    "type" : "WEB",
    "url" : "https://movermeyer.com/2018-08-02-privilege-escalation-exploits-in-cobblers-api"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-732" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-21T22:30:25Z",
    "nvd_published_at" : "2018-08-20T20:29:00Z"
  }
}