CVE-2018-10931: Cobbler Cobbler Has Exposed Dangerous Method Vulnerability

CRITICAL
Advisory Identifier: GHSA-8787-63px-3m23
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CVSS 9.8
CWE-749
Published
Advisory Summary

CVE-2018-10931 is a CRITICAL (CVSS 9.8) cobbler has exposed dangerous method vulnerability (CWE-749: Exposed Dangerous Method or Function) affecting Cobbler libraries in the PyPI ecosystem. The issue involves cobbler has exposed dangerous method or function. Remediation is available by upgrading affected packages to version 3.0.0.

CVE-2018-10931 at a Glance

CVE Identifier CVE-2018-10931
GHSA Identifier GHSA-8787-63px-3m23
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-749: Exposed Dangerous Method or Function
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-2018-10931

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-2018-10931, 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-749: Exposed Dangerous Method or Function, where the product provides an applications programming interface (api) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted. 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

It was found that cobbler 2.6.x exposed all functions from its CobblerXMLRPCInterface class over XMLRPC. A remote, unauthenticated attacker could use this flaw to gain high privileges within cobbler, upload files to arbitrary location in the context of the daemon.

CVE-2018-10931 Affected Cobbler Versions

1 component(s)
Fixed Versions:
3.0.0
Product / Package Ecosystem Affected Versions Fixed Version
cobbler
pypi/cobbler
PyPI
≥ 2.6.0
< 3.0.0
3.0.0

References

NVD — CVE-2018-10931 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-10931
Cobbler Source Repository REPOSITORY
https://github.com/cobbler/cobbler/issues/1916
Cobbler Source Repository REPOSITORY
https://github.com/cobbler/cobbler/pull/1921
Security Fix Commit FIX COMMIT
https://github.com/cobbler/cobbler/commit/1b91a3d3ac87c31d9dac2307513feb2aa49620a6
access.redhat.com/errata/rhsa-2018:23... WEB
https://access.redhat.com/errata/RHSA-2018:2372
Cobbler Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2018-10931
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1613861
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10931
Cobbler Source Repository REPOSITORY
https://github.com/cobbler/cobbler
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P5Q4ACIVZ5D4KSUDLGRTOKGGB4U42SD
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMWK5KCCZXOGOYNR2H6BWDSABTQ5NYJA
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5P5Q4ACIVZ5D4KSUDLGRTOKGGB4U42SD
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CMWK5KCCZXOGOYNR2H6BWDSABTQ5NYJA
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-2018-10931?
CVE-2018-10931 is a security vulnerability in Cobbler involving Cobbler has Exposed Dangerous Method or Function under CWE-749: Exposed Dangerous Method or Function.
Which Cobbler versions are affected?
Affected versions include releases prior to 3.0.0 across affected packages: cobbler.
What version fixes CVE-2018-10931?
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-2018-10931?
CVE-2018-10931 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-2018-10931?
CVE-2018-10931 is classified under CWE-749: Exposed Dangerous Method or Function (The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.).
How can I check PyPI dependencies for CVE-2018-10931?
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-8787-63px-3m23",
  "modified" : "2023-02-08T18:08:11Z",
  "published" : "2022-05-13T01:54:14Z",
  "aliases" : [ "CVE-2018-10931" ],
  "summary" : "Cobbler has Exposed Dangerous Method or Function",
  "details" : "It was found that cobbler 2.6.x exposed all functions from its CobblerXMLRPCInterface class over XMLRPC. A remote, unauthenticated attacker could use this flaw to gain high privileges within cobbler, upload files to arbitrary location in the context of the daemon.",
  "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" : "2.6.0"
      }, {
        "fixed" : "3.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-10931"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cobbler/cobbler/issues/1916"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cobbler/cobbler/pull/1921"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cobbler/cobbler/commit/1b91a3d3ac87c31d9dac2307513feb2aa49620a6"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2018:2372"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2018-10931"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1613861"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10931"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cobbler/cobbler"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P5Q4ACIVZ5D4KSUDLGRTOKGGB4U42SD"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMWK5KCCZXOGOYNR2H6BWDSABTQ5NYJA"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5P5Q4ACIVZ5D4KSUDLGRTOKGGB4U42SD"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CMWK5KCCZXOGOYNR2H6BWDSABTQ5NYJA"
  }, {
    "type" : "WEB",
    "url" : "https://movermeyer.com/2018-08-02-privilege-escalation-exploits-in-cobblers-api"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-749" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-02-08T18:08:11Z",
    "nvd_published_at" : "2018-08-09T20:29:00Z"
  }
}