CVE-2020-25827: Mediawiki/core OATHAuth Extension Vulnerability

Q: What is CVE-2020-25827?

CVE-2020-25827 is a security vulnerability in Mediawiki/core involving OATHAuth extension in MediaWiki is not implementing rate limit under CWE-307: Improper Restriction of Excessive Authentication Attempts.

Q: Which Mediawiki/core versions are affected?

Affected versions include releases prior to 1.31.9, 1.34.3 across affected packages: mediawiki/core.

Q: What version fixes CVE-2020-25827?

Upgrading to 1.31.9, 1.34.3 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is mediawiki/core affected?

Yes, mediawiki/core is affected in releases prior to 1.31.9, 1.34.3. Upgrade your dependency to 1.31.9, 1.34.3 or later.

Q: What is the CVSS score of CVE-2020-25827?

CVE-2020-25827 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Q: What CWE is associated with CVE-2020-25827?

CVE-2020-25827 is classified under CWE-307: Improper Restriction of Excessive Authentication Attempts (The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.).

Q: How can I check Packagist dependencies for CVE-2020-25827?

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.

HIGH

Advisory Identifier: GHSA-rqvj-fc2x-99q6

CVSS 7.5

CWE-307

Published 2022-05-24

Advisory Summary

CVE-2020-25827 is a HIGH (CVSS 7.5) oathauth extension vulnerability (CWE-307: Improper Restriction of Excessive Authentication Attempts) affecting Mediawiki/core libraries in the Packagist ecosystem. The issue involves oathauth extension in mediawiki is not implementing rate limit. Remediation is available by upgrading affected packages to version 1.31.9, 1.34.3.

CVE-2020-25827 at a Glance

CVE Identifier CVE-2020-25827

GHSA Identifier GHSA-rqvj-fc2x-99q6

Severity HIGH

CVSS v3.1 Base Score 7.5

CWE Classification CWE-307: Improper Restriction of Excessive Authentication Attempts

Affected Product Mediawiki/core

Package Ecosystem Packagist

Published Date 2022-05-24

Last Updated 2024-05-17

Security Impact

CVSS: 7.5

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:N/S:U/C:N/I:H/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 None (C:N)

Integrity High (I:H)

Availability None (A:N)

How to Fix CVE-2020-25827

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: 1.31.9

Upgrade mediawiki/core to 1.31.9

mediawiki/core fixed: 1.34.3

Upgrade mediawiki/core to 1.34.3

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-2020-25827, 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 1.31.9), 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-307: Improper Restriction of Excessive Authentication Attempts, where the product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. 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

An issue was discovered in the OATHAuth extension in MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3. For Wikis using OATHAuth on a farm/cluster (such as via CentralAuth), rate limiting of OATH tokens is only done on a single site level. Thus, multiple requests can be made across many wikis/sites concurrently.

CVE-2020-25827 Affected Mediawiki/core Versions

2 component(s)

Fixed Versions:

1.31.91.34.3

Product / Package	Ecosystem	Affected Versions	Fixed Version
mediawiki/core	Packagist	≥ 1.31.0 < 1.31.9	1.31.9
mediawiki/core	Packagist	≥ 1.32.0 < 1.34.3	1.34.3

References

NVD — CVE-2020-25827 NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-25827

Mediawiki/core Source Repository REPOSITORY

https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25827.yaml

Mediawiki/core Source Repository REPOSITORY

https://github.com/wikimedia/mediawiki

lists.fedoraproject.org/archives/list/packa... WEB

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6

lists.fedoraproject.org/archives/list/packa... WEB

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6

lists.wikimedia.org/pipermail/mediawiki... WEB

https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html

lists.wikimedia.org/pipermail/mediawiki... WEB

https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html

phabricator.wikimedia.org/t251661 WEB

https://phabricator.wikimedia.org/T251661

Frequently Asked Questions

What is CVE-2020-25827?

CVE-2020-25827 is a security vulnerability in Mediawiki/core involving OATHAuth extension in MediaWiki is not implementing rate limit under CWE-307: Improper Restriction of Excessive Authentication Attempts.

Which Mediawiki/core versions are affected?

Affected versions include releases prior to 1.31.9, 1.34.3 across affected packages: mediawiki/core.

What version fixes CVE-2020-25827?

Upgrading to 1.31.9, 1.34.3 (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 1.31.9, 1.34.3. Upgrade your dependency to 1.31.9, 1.34.3 or later.

What is the CVSS score of CVE-2020-25827?

CVE-2020-25827 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

What CWE is associated with CVE-2020-25827?

CVE-2020-25827 is classified under CWE-307: Improper Restriction of Excessive Authentication Attempts (The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.).

How can I check Packagist dependencies for CVE-2020-25827?

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-rqvj-fc2x-99q6",
  "modified" : "2024-05-17T21:56:33Z",
  "published" : "2022-05-24T17:29:42Z",
  "aliases" : [ "CVE-2020-25827" ],
  "summary" : "OATHAuth extension in MediaWiki is not implementing rate limit",
  "details" : "An issue was discovered in the OATHAuth extension in MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3. For Wikis using OATHAuth on a farm/cluster (such as via CentralAuth), rate limiting of OATH tokens is only done on a single site level. Thus, multiple requests can be made across many wikis/sites concurrently.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.31.0"
      }, {
        "fixed" : "1.31.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mediawiki/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.32.0"
      }, {
        "fixed" : "1.34.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25827"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25827.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/wikimedia/mediawiki"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6"
  }, {
    "type" : "WEB",
    "url" : "https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T251661"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-307" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-17T21:56:33Z",
    "nvd_published_at" : "2020-09-27T21:15:00Z"
  }
}

CVSS V3

7.5 HIGH