GHSA-mp92-3jfm-3575
Vulnerability from github
Published
2023-10-31 20:29
Modified
2023-10-31 20:29
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
Synapse vulnerable to leak of remote user device information
Details

Impact

Cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver.

Patches

System administrators are encouraged to upgrade to Synapse 1.95.1 as soon as possible.

Workarounds

The federation_domain_whitelist can be used to limit federation traffic with a homeserver.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.95.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43796"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-10-31T20:29:49Z",
    "nvd_published_at": "2023-10-31T17:15:23Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nCached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver.\n\n### Patches\nSystem administrators are encouraged to upgrade to Synapse 1.95.1 as soon as possible.\n\n### Workarounds\nThe `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.\n",
  "id": "GHSA-mp92-3jfm-3575",
  "modified": "2023-10-31T20:29:49Z",
  "published": "2023-10-31T20:29:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43796"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/daec55e1fe120c564240c5386e77941372bf458f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/synapse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-230.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2IDEEZMFJBDLTFHQUTZRJJNCOZGQ2ZVS"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VH3RNC5ZPQZ4OKPSL4E6BBJSZOQLGDEY"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202401-12"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Synapse vulnerable to leak of remote user device information"
}


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