CVE-2019-12474: Mediawiki/core Wikimedia Information Leak Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2qrr-c2gh-pr35
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CVSS 7.5
CWE-200
Published
Advisory Summary

CVE-2019-12474 is a HIGH (CVSS 7.5) wikimedia information leak vulnerability vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Mediawiki/core libraries in the Packagist ecosystem. The issue involves wikimedia information leak vulnerability. Remediation is available by upgrading affected packages to version 1.27.6, 1.30.2, 1.31.2, 1.32.2.

CVE-2019-12474 at a Glance

CVE Identifier CVE-2019-12474
GHSA Identifier GHSA-2qrr-c2gh-pr35
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Mediawiki/core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/A:N).

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 None (I:N)
Availability None (A:N)

How to Fix CVE-2019-12474

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-2019-12474, 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. 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 1.23.0 through 1.32.1 has an information leak. Privileged API responses that include whether a recent change has been patrolled may be cached publicly. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

CVE-2019-12474 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-2019-12474 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12474
Mediawiki/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12474.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/t212118 WEB
https://phabricator.wikimedia.org/T212118
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-2019-12474?
CVE-2019-12474 is a security vulnerability in Mediawiki/core involving Wikimedia information leak vulnerability under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
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-2019-12474?
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-2019-12474?
CVE-2019-12474 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2019-12474?
CVE-2019-12474 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Packagist dependencies for CVE-2019-12474?
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-2qrr-c2gh-pr35",
  "modified" : "2024-05-15T22:47:46Z",
  "published" : "2022-05-24T16:49:59Z",
  "aliases" : [ "CVE-2019-12474" ],
  "summary" : "Wikimedia information leak vulnerability",
  "details" : "Wikimedia MediaWiki 1.23.0 through 1.32.1 has an information leak. Privileged API responses that include whether a recent change has been patrolled may be cached publicly. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "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-2019-12474"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12474.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/T212118"
  }, {
    "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-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-15T22:47:46Z",
    "nvd_published_at" : "2019-07-10T16:15:00Z"
  }
}