CVE-2020-10959: Mediawiki/core MediaWiki Open Redirect Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-mqhw-wq8p-vf5r
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2020-10959 is a MODERATE (CVSS 6.1) mediawiki open redirect vulnerability vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Mediawiki/core libraries in the Packagist ecosystem. The issue involves mediawiki open redirect vulnerability. Remediation is available by upgrading affected packages to version 1.34.0-rc.0.

CVE-2020-10959 at a Glance

CVE Identifier CVE-2020-10959
GHSA Identifier GHSA-mqhw-wq8p-vf5r
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Mediawiki/core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2020-10959

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: 1.34.0-rc.0 
Upgrade mediawiki/core to 1.34.0-rc.0
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-2020-10959, 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 1.34.0-rc.0), 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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

resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.34.0-rc.0 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.

CVE-2020-10959 Affected Mediawiki/core Versions

1 component(s)
Fixed Versions:
1.34.0-rc.0
Product / Package Ecosystem Affected Versions Fixed Version
mediawiki/core
 Packagist
< 1.34.0-rc.0
1.34.0-rc.0

References

NVD — CVE-2020-10959 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10959
Security Fix Commit FIX COMMIT
https://github.com/wikimedia/mediawiki/commit/d4a552e65bdfd7309a9b8537e9dbe69c5e2991eb
gerrit.wikimedia.org/r/c/mediawiki/core/... WEB
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/536725
Mediawiki/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-10959.yaml
Mediawiki/core Source Repository REPOSITORY
https://github.com/wikimedia/mediawiki
phabricator.wikimedia.org/t232932 WEB
https://phabricator.wikimedia.org/T232932
phabricator.wikimedia.org/t240393 WEB
https://phabricator.wikimedia.org/T240393

Frequently Asked Questions

What is CVE-2020-10959?
CVE-2020-10959 is a security vulnerability in Mediawiki/core involving MediaWiki Open Redirect vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Mediawiki/core versions are affected?
Affected versions include releases prior to 1.34.0-rc.0 across affected packages: mediawiki/core.
What version fixes CVE-2020-10959?
Upgrading to 1.34.0-rc.0 (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 1.34.0-rc.0. Upgrade your dependency to 1.34.0-rc.0 or later.
What is the CVSS score of CVE-2020-10959?
CVE-2020-10959 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-10959?
CVE-2020-10959 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check Packagist dependencies for CVE-2020-10959?
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-mqhw-wq8p-vf5r",
  "modified" : "2024-05-15T22:52:26Z",
  "published" : "2022-05-24T17:18:58Z",
  "aliases" : [ "CVE-2020-10959" ],
  "summary" : "MediaWiki Open Redirect vulnerability",
  "details" : "resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.34.0-rc.0 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.34.0-rc.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-10959"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/wikimedia/mediawiki/commit/d4a552e65bdfd7309a9b8537e9dbe69c5e2991eb"
  }, {
    "type" : "WEB",
    "url" : "https://gerrit.wikimedia.org/r/c/mediawiki/core/+/536725"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-10959.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/wikimedia/mediawiki"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T232932"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T240393"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-15T22:52:26Z",
    "nvd_published_at" : "2020-06-02T14:15:00Z"
  }
}