GHSA-V662-XPCC-9XF6

Vulnerability from github – Published: 2021-03-23 22:47 – Updated: 2021-03-23 22:24
VLAI?
Summary
It's possible to execute anything with the rights of the author of a macro which uses the {{wikimacrocontent}} macro
Details

Impact

The {{wikimacrocontent}} executes the content with the rights of the wiki macro author instead of the caller of that wiki macro. This makes possible to inject scripts through it and they will be executed with the rights of the wiki macro (very often a user which has Programming rights).

Fortunately, no such macro exists by default in XWiki Standard but one could have been created or installed with an extension.

Patches

It has been patched in versions XWiki 12.6.3, 11.10.11 and 12.8-rc-1.

Workarounds

There is no easy workaround other than disabling the affected macros. Inserting content in a safe way or knowing what is the user who called the wiki macro is not easy.

References

https://jira.xwiki.org/browse/XWIKI-17759

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki * Email us at our security mailing list

Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-rendering-wikimacro-store"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.4"
            },
            {
              "fixed": "11.10.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-rendering-wikimacro-store"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.0"
            },
            {
              "fixed": "12.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 12.7.1"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-rendering-wikimacro-store"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.7"
            },
            {
              "fixed": "12.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21379"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-281"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-03-23T22:24:20Z",
    "nvd_published_at": "2021-03-12T18:15:00Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nThe `{{wikimacrocontent}}` executes the content with the rights of the wiki macro author instead of the caller of that wiki macro. This makes possible to inject scripts through it and they will be executed with the rights of the wiki macro (very often a user which has Programming rights).\n\nFortunately, no such macro exists by default in XWiki Standard but one could have been created or installed with an extension.\n\n### Patches\n\nIt has been patched in versions XWiki 12.6.3, 11.10.11 and 12.8-rc-1.\n\n### Workarounds\n\nThere is no easy workaround other than disabling the affected macros.\nInserting content in a safe way or knowing what is the user who called the wiki macro is not easy.\n\n### References\n\nhttps://jira.xwiki.org/browse/XWIKI-17759\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki](https://jira.xwiki.org)\n* Email us at [our security mailing list](mailto:security@xwiki.org)",
  "id": "GHSA-v662-xpcc-9xf6",
  "modified": "2021-03-23T22:24:20Z",
  "published": "2021-03-23T22:47:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-v662-xpcc-9xf6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21379"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/XWIKI-17759"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "It\u0027s possible to execute anything with the rights of the author of a macro which uses the {{wikimacrocontent}} macro"
}


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  • 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.



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