ghsa-vhr5-g3pm-49fm
Vulnerability from github
Published
2024-08-20 18:35
Modified
2024-08-20 18:35
Severity ?
4.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L
5.1 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
Summary
matrix-js-sdk will freeze when a user sets a room with itself as a its predecessor
Details

Impact

A malicious homeserver can craft a room or room structure such that the predecessors form a cycle. The matrix-js-sdk's getRoomUpgradeHistory function will infinitely recurse in this case, causing the code to hang. This method is public but also called by the 'leaveRoomChain()' method, so leaving a room will also trigger the bug.

Even if the CVSS score would be 4.1 (AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L) we classify this as High severity issue.

Patches

This was patched in matrix-js-sdk 34.3.1.

Workarounds

Sanity check rooms before passing them to the matrix-js-sdk or avoid calling either getRoomUpgradeHistory or leaveRoomChain.

References

N/A.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "matrix-js-sdk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "34.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-42369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-20T18:35:27Z",
    "nvd_published_at": "2024-08-20T15:15:21Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nA malicious homeserver can craft a room or room structure such that the predecessors form a cycle. The matrix-js-sdk\u0027s `getRoomUpgradeHistory` function will infinitely recurse in this case, causing the code to hang. This method is public but also called by the \u0027leaveRoomChain()\u0027 method, so leaving a room will also trigger the bug.\n\nEven if the CVSS score would be 4.1 ([AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L](https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L\u0026version=3.1)) we classify this as High severity issue.\n\n### Patches\nThis was patched in matrix-js-sdk 34.3.1.\n\n### Workarounds\nSanity check rooms before passing them to the matrix-js-sdk or avoid calling either `getRoomUpgradeHistory` or `leaveRoomChain`.\n\n### References\nN/A.\n",
  "id": "GHSA-vhr5-g3pm-49fm",
  "modified": "2024-08-20T18:35:28Z",
  "published": "2024-08-20T18:35:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-vhr5-g3pm-49fm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42369"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-js-sdk/commit/a0efed8b881b3db6c9f2c71d6a6e74c2828978c6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/matrix-js-sdk"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "matrix-js-sdk will freeze when a user sets a room with itself as a its predecessor"
}


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