ghsa-cv55-v6rw-7r5v
Vulnerability from github
Published
2024-04-10 17:14
Modified
2024-04-10 22:01
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
XWiki Platform remote code execution from account via custom skins support
Details

Impact

Any user who can edit any page like their profile can create a custom skin with a template override that is executed with programming right, thus allowing remote code execution.

To reproduce, as a user without edit, script or admin right, add an object of class XWiki.XWikiSkins to your profile. Name it whatever you want and set the Base Skin to flamingo. Add an object of class XWikiSkinFileOverrideClass and set the path to macros.vm and the content to: ```

macro(mediumUserAvatar $username)

#resizedUserAvatar($username 50) $services.logging.getLogger('Skin').error("I got programming: $services.security.authorization.hasAccess('programming')")

end

`` Back to your profile, clickTest this skin`. Force a refresh, just in case. If the error "Skin - I got programming: true" gets logged, the installation is vulnerable.

Patches

This has been patched in XWiki 14.10.19, 15.5.4 and 15.10RC1.

Workarounds

We're not aware of any workaround except upgrading.

References

  • https://jira.xwiki.org/browse/XWIKI-21478
  • https://github.com/xwiki/xwiki-platform/commit/3d4dbb41f52d1a6e39835cfb1695ca6668605a39 (>= 15.8 RC1)
  • https://github.com/xwiki/xwiki-platform/commit/da177c3c972e797d92c1a31e278f946012c41b56 (< 15.8 RC1)
Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-oldcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4-milestone-1"
            },
            {
              "fixed": "14.10.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-oldcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "15.0-rc-1"
            },
            {
              "fixed": "15.5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-oldcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "15.6-rc-1"
            },
            {
              "fixed": "15.10-rc-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-31987"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-04-10T17:14:47Z",
    "nvd_published_at": "2024-04-10T21:15:07Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nAny user who can edit any page like their profile can create a custom skin with a template override that is executed with programming right, thus allowing remote code execution. \n\nTo reproduce, as a user without edit, script or admin right, add an object of class `XWiki.XWikiSkins` to your profile. Name it whatever you want and set the Base Skin to `flamingo`.\nAdd an object of class `XWikiSkinFileOverrideClass` and set the path to `macros.vm` and the content to:\n```\n#macro(mediumUserAvatar $username)\n  #resizedUserAvatar($username 50)\n  $services.logging.getLogger(\u0027Skin\u0027).error(\"I got programming: $services.security.authorization.hasAccess(\u0027programming\u0027)\")\n#end\n```\nBack to your profile, click `Test this skin`. Force a refresh, just in case.\nIf the error \"Skin - I got programming: true\" gets logged, the installation is vulnerable.\n\n### Patches\nThis has been patched in XWiki 14.10.19, 15.5.4 and 15.10RC1.\n\n### Workarounds\nWe\u0027re not aware of any workaround except upgrading.\n\n### References\n* https://jira.xwiki.org/browse/XWIKI-21478\n* https://github.com/xwiki/xwiki-platform/commit/3d4dbb41f52d1a6e39835cfb1695ca6668605a39 (\u003e= 15.8 RC1)\n* https://github.com/xwiki/xwiki-platform/commit/da177c3c972e797d92c1a31e278f946012c41b56 (\u003c 15.8 RC1)\n",
  "id": "GHSA-cv55-v6rw-7r5v",
  "modified": "2024-04-10T22:01:40Z",
  "published": "2024-04-10T17:14:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-cv55-v6rw-7r5v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31987"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/3d4dbb41f52d1a6e39835cfb1695ca6668605a39"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/626d2a5dbf95b4e719ae13bf1a0a9c76e4edd5a2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/da177c3c972e797d92c1a31e278f946012c41b56"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xwiki/xwiki-platform"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/XWIKI-21478"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XWiki Platform remote code execution from account via custom skins support"
}


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