GHSA-H8QX-MJ6V-2934

Vulnerability from github – Published: 2022-05-24 17:29 – Updated: 2024-05-17 21:56
VLAI
Summary
MediaWiki Cross-site Scripting (XSS) vulnerability
Details

An issue was discovered in MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3. The non-jqueryMsg version of mw.message().parse() doesn't escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "mediawiki/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.31.0"
            },
            {
              "fixed": "1.31.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "mediawiki/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.32.0"
            },
            {
              "fixed": "1.34.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "mediawiki/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.35.0-rc.0"
            },
            {
              "fixed": "1.35.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-25828"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-05-17T21:56:26Z",
    "nvd_published_at": "2020-09-27T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3. The non-jqueryMsg version of mw.message().parse() doesn\u0027t escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)",
  "id": "GHSA-h8qx-mj6v-2934",
  "modified": "2024-05-17T21:56:26Z",
  "published": "2022-05-24T17:29:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25828"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25828.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wikimedia/mediawiki"
    },
    {
      "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-announce"
    },
    {
      "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/T115888"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MediaWiki Cross-site Scripting (XSS) vulnerability"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.