CVE-2019-12466: Mediawiki/core Wikimedia MediaWiki Allows CSRF Vulnerability

HIGH
Advisory Identifier: GHSA-27fw-r78j-h898
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CVSS 8.8
CWE-352
Published
Advisory Summary

CVE-2019-12466 is a HIGH (CVSS 8.8) wikimedia mediawiki allows csrf vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Mediawiki/core libraries in the Packagist ecosystem. The issue involves wikimedia mediawiki allows csrf. Remediation is available by upgrading affected packages to version 1.27.6, 1.30.2, 1.31.2, 1.32.2.

CVE-2019-12466 at a Glance

CVE Identifier CVE-2019-12466
GHSA Identifier GHSA-27fw-r78j-h898
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Mediawiki/core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:R/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 Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-12466

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

mediawiki/core fixed: 1.27.6 
Upgrade mediawiki/core to 1.27.6
mediawiki/core fixed: 1.30.2 
Upgrade mediawiki/core to 1.30.2
mediawiki/core fixed: 1.31.2 
Upgrade mediawiki/core to 1.31.2
mediawiki/core fixed: 1.32.2 
Upgrade mediawiki/core to 1.32.2
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 mediawiki/core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-12466, inspect your project dependencies for Mediawiki/core:

inspect dependencies for mediawiki/core

Analyze the terminal output to locate any version of Mediawiki/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.27.6), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Mediawiki/core, 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

Wikimedia MediaWiki through 1.32.1 allows CSRF in logout feature.

CVE-2019-12466 Affected Mediawiki/core Versions

4 component(s)
Fixed Versions:
1.27.61.30.21.31.21.32.2
Product / Package Ecosystem Affected Versions Fixed Version
mediawiki/core
 Packagist
≥ 1.27.0
< 1.27.6
1.27.6
mediawiki/core
 Packagist
≥ 1.30.0
< 1.30.2
1.30.2
mediawiki/core
 Packagist
≥ 1.31.0
< 1.31.2
1.31.2
mediawiki/core
 Packagist
≥ 1.32.0
< 1.32.2
1.32.2

References

NVD — CVE-2019-12466 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12466
Mediawiki/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12466.yaml
Mediawiki/core Source Repository REPOSITORY
https://github.com/wikimedia/mediawiki
lists.wikimedia.org/pipermail/wikitech-... WEB
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
phabricator.wikimedia.org/t25227 WEB
https://phabricator.wikimedia.org/T25227
seclists.org/bugtraq/2019/jun/12 WEB
https://seclists.org/bugtraq/2019/Jun/12
Mediawiki/core Security Information SECURITY
https://www.debian.org/security/2019/dsa-4460

Frequently Asked Questions

What is CVE-2019-12466?
CVE-2019-12466 is a security vulnerability in Mediawiki/core involving Wikimedia MediaWiki allows CSRF under CWE-352: Cross-Site Request Forgery (CSRF).
Which Mediawiki/core versions are affected?
Affected versions include releases prior to 1.27.6, 1.30.2, 1.31.2, 1.32.2 across affected packages: mediawiki/core.
What version fixes CVE-2019-12466?
Upgrading to 1.27.6, 1.30.2, 1.31.2, 1.32.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mediawiki/core affected?
Yes, mediawiki/core is affected in releases prior to 1.27.6, 1.30.2, 1.31.2, 1.32.2. Upgrade your dependency to 1.27.6, 1.30.2, 1.31.2, 1.32.2 or later.
What is the CVSS score of CVE-2019-12466?
CVE-2019-12466 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-12466?
CVE-2019-12466 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2019-12466?
Run the dependency tree command: 'inspect dependencies for mediawiki/core'. 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-27fw-r78j-h898",
  "modified" : "2024-05-15T22:44:02Z",
  "published" : "2022-05-24T16:49:58Z",
  "aliases" : [ "CVE-2019-12466" ],
  "summary" : "Wikimedia MediaWiki allows CSRF",
  "details" : "Wikimedia MediaWiki through 1.32.1 allows CSRF in logout feature. ",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.27.0"
      }, {
        "fixed" : "1.27.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.30.0"
      }, {
        "fixed" : "1.30.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.31.0"
      }, {
        "fixed" : "1.31.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.32.0"
      }, {
        "fixed" : "1.32.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-12466"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12466.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/wikimedia/mediawiki"
  }, {
    "type" : "WEB",
    "url" : "https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T25227"
  }, {
    "type" : "WEB",
    "url" : "https://seclists.org/bugtraq/2019/Jun/12"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2019/dsa-4460"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-15T22:44:02Z",
    "nvd_published_at" : "2019-07-10T16:15:00Z"
  }
}