pysec - pysec-2021-424

pysec-2021-424

Vulnerability from pysec

Published

2021-08-31 16:15

Modified

2021-11-16 03:58

Details

Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting enable_group_creation has been set to true are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set enable_group_creation to false in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints /_matrix/client/r0/groups/{group_id}/rooms and /_matrix/client/unstable/groups/{group_id}/rooms.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse",
        "purl": "pkg:pypi/matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cb35df940a"
            }
          ],
          "repo": "https://github.com/matrix-org/synapse",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.41.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.33.5",
        "0.33.5.1",
        "0.33.6",
        "0.33.6rc1",
        "0.33.7",
        "0.33.7rc1",
        "0.33.7rc2",
        "0.33.8",
        "0.33.8rc2",
        "0.33.9",
        "0.34.0",
        "0.34.0.1",
        "0.34.0rc1",
        "0.34.0rc2",
        "0.34.1.1",
        "0.99.0",
        "0.99.0rc1",
        "0.99.0rc2",
        "0.99.0rc3",
        "0.99.0rc4",
        "0.99.1",
        "0.99.1.1",
        "0.99.1rc1",
        "0.99.1rc2",
        "0.99.2",
        "0.99.2rc1",
        "0.99.3",
        "0.99.3.1",
        "0.99.3.2",
        "0.99.3rc1",
        "0.99.4",
        "0.99.4rc1",
        "0.99.5",
        "0.99.5.1",
        "0.99.5.2",
        "0.99.5rc1",
        "1.0.0",
        "1.0.0rc1",
        "1.0.0rc2",
        "1.0.0rc3",
        "1.1.0",
        "1.1.0rc1",
        "1.1.0rc2",
        "1.10.0",
        "1.10.0rc1",
        "1.10.0rc2",
        "1.10.0rc3",
        "1.10.0rc5",
        "1.10.1",
        "1.11.0",
        "1.11.0rc1",
        "1.11.1",
        "1.12.0",
        "1.12.0rc1",
        "1.12.1",
        "1.12.1rc1",
        "1.12.2",
        "1.12.3",
        "1.12.4",
        "1.12.4rc1",
        "1.13.0",
        "1.13.0rc1",
        "1.13.0rc2",
        "1.13.0rc3",
        "1.14.0",
        "1.14.0rc1",
        "1.14.0rc2",
        "1.15.0",
        "1.15.0rc1",
        "1.15.1",
        "1.15.2",
        "1.16.0",
        "1.16.0rc1",
        "1.16.0rc2",
        "1.16.1",
        "1.17.0",
        "1.17.0rc1",
        "1.18.0",
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        "1.18.0rc2",
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        "1.19.0rc1",
        "1.19.1",
        "1.19.1rc1",
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        "1.19.3",
        "1.2.0",
        "1.2.0rc1",
        "1.2.0rc2",
        "1.2.1",
        "1.20.0",
        "1.20.0rc1",
        "1.20.0rc2",
        "1.20.0rc3",
        "1.20.0rc4",
        "1.20.0rc5",
        "1.20.1",
        "1.21.0",
        "1.21.0rc1",
        "1.21.0rc2",
        "1.21.0rc3",
        "1.21.1",
        "1.21.2",
        "1.22.0",
        "1.22.0rc1",
        "1.22.0rc2",
        "1.22.1",
        "1.23.0",
        "1.23.0rc1",
        "1.23.1",
        "1.24.0",
        "1.24.0rc1",
        "1.24.0rc2",
        "1.25.0",
        "1.25.0rc1",
        "1.26.0",
        "1.26.0rc1",
        "1.26.0rc2",
        "1.27.0",
        "1.27.0rc1",
        "1.27.0rc2",
        "1.28.0",
        "1.28.0rc1",
        "1.29.0",
        "1.29.0rc1",
        "1.3.0",
        "1.3.0rc1",
        "1.3.1",
        "1.30.0",
        "1.30.0rc1",
        "1.30.1",
        "1.31.0",
        "1.31.0rc1",
        "1.32.0",
        "1.32.0rc1",
        "1.32.1",
        "1.32.2",
        "1.33.0",
        "1.33.0rc1",
        "1.33.0rc2",
        "1.33.1",
        "1.33.2",
        "1.34.0",
        "1.34.0rc1",
        "1.35.0",
        "1.35.0rc1",
        "1.35.0rc2",
        "1.35.0rc3",
        "1.35.1",
        "1.36.0",
        "1.36.0rc1",
        "1.36.0rc2",
        "1.37.0",
        "1.37.0rc1",
        "1.37.1",
        "1.37.1rc1",
        "1.38.0",
        "1.38.0rc1",
        "1.38.0rc2",
        "1.38.0rc3",
        "1.38.1",
        "1.39.0",
        "1.39.0rc1",
        "1.39.0rc2",
        "1.39.0rc3",
        "1.4.0",
        "1.4.0rc1",
        "1.4.0rc2",
        "1.4.1",
        "1.4.1rc1",
        "1.40.0",
        "1.40.0rc1",
        "1.40.0rc2",
        "1.40.0rc3",
        "1.41.0",
        "1.41.0rc1",
        "1.5.0",
        "1.5.0rc1",
        "1.5.0rc2",
        "1.5.1",
        "1.6.0",
        "1.6.0rc1",
        "1.6.0rc2",
        "1.6.1",
        "1.7.0",
        "1.7.0rc1",
        "1.7.0rc2",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.8.0",
        "1.8.0rc1",
        "1.9.0",
        "1.9.0.dev1",
        "1.9.0.dev2",
        "1.9.0rc1",
        "1.9.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39163",
    "GHSA-jj53-8fmw-f2w2"
  ],
  "details": "Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`.",
  "id": "PYSEC-2021-424",
  "modified": "2021-11-16T03:58:44.500451Z",
  "published": "2021-08-31T16:15:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jj53-8fmw-f2w2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/releases/tag/v1.41.1"
    },
    {
      "type": "FIX",
      "url": "https://github.com/matrix-org/synapse/commit/cb35df940a"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXT7ID7DNBRN2TVTETU3SYQHJKEG6PXN/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2VHDEPCZ22GJFMZCWA2XZAGPOEV72POF/"
    }
  ]
}

cve-2021-39163

Vulnerability from cvelistv5

Published

2021-08-31 16:00

Modified

2024-08-04 01:58

Severity ?

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

References

▼	URL	Tags
	https://github.com/matrix-org/synapse/security/advisories/GHSA-jj53-8fmw-f2w2	x_refsource_CONFIRM
	https://github.com/matrix-org/synapse/commit/cb35df940a	x_refsource_MISC
	https://github.com/matrix-org/synapse/releases/tag/v1.41.1	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXT7ID7DNBRN2TVTETU3SYQHJKEG6PXN/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2VHDEPCZ22GJFMZCWA2XZAGPOEV72POF/	vendor-advisory, x_refsource_FEDORA

Impacted products

Vendor

Product

Version

▼

matrix-org

synapse

Version: < 1.41.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
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        "references": [
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            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jj53-8fmw-f2w2"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://github.com/matrix-org/synapse/commit/cb35df940a"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/releases/tag/v1.41.1"
          },
          {
            "name": "FEDORA-2021-2e8ed15b14",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXT7ID7DNBRN2TVTETU3SYQHJKEG6PXN/"
          },
          {
            "name": "FEDORA-2021-f12fdca1bf",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2VHDEPCZ22GJFMZCWA2XZAGPOEV72POF/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "synapse",
          "vendor": "matrix-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.41.1"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
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            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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            "version": "3.1"
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          "url": "https://github.com/matrix-org/synapse/releases/tag/v1.41.1"
        },
        {
          "name": "FEDORA-2021-2e8ed15b14",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXT7ID7DNBRN2TVTETU3SYQHJKEG6PXN/"
        },
        {
          "name": "FEDORA-2021-f12fdca1bf",
          "tags": [
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            "x_refsource_FEDORA"
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        }
      ],
      "source": {
        "advisory": "GHSA-jj53-8fmw-f2w2",
        "discovery": "UNKNOWN"
      },
      "title": "Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-39163",
          "STATE": "PUBLIC",
          "TITLE": "Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner."
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "synapse",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.41.1"
                          }
                        ]
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        "description": {
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              "value": "Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`."
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        "problemtype": {
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              "description": [
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            },
            {
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              "refsource": "MISC",
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            },
            {
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            },
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    "datePublished": "2021-08-31T16:00:11",
    "dateReserved": "2021-08-16T00:00:00",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-jj53-8fmw-f2w2

Vulnerability from github

Published

2021-09-01 18:25

Modified

2024-09-24 15:37

Severity ?

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
2.3 (Low) - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Details

Impact

Unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where: - the vulnerable homeserver is in the room; and - untrusted users are permitted to create groups (communities).

By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting enable_group_creation has been set to true are impacted.

Patches

Server administrators should upgrade to 1.41.1 or higher.

Workarounds

Server administrators can set enable_group_creation to false in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators.

Administrators that are using a reverse proxy could, with partial loss of group functionality, block the following endpoints: * /_matrix/client/r0/groups/{group_id}/rooms * /_matrix/client/unstable/groups/{group_id}/rooms

References

n/a

For more information

If you have any questions or comments about this advisory, e-mail us at security@matrix.org.

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.41.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39163"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-31T17:46:08Z",
    "nvd_published_at": "2021-08-31T16:15:00Z",
    "severity": "LOW"
  },
  "details": "### Impact\nUnauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where:\n- the vulnerable homeserver is in the room; and\n- untrusted users are permitted to create groups (communities).\n\nBy default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted.\n\n### Patches\nServer administrators should upgrade to 1.41.1 or higher.\n\n### Workarounds\nServer administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators.\n\nAdministrators that are using a reverse proxy could, with partial loss of group functionality, block the following endpoints:\n* `/_matrix/client/r0/groups/{group_id}/rooms`\n* `/_matrix/client/unstable/groups/{group_id}/rooms`\n\n### References\nn/a\n\n### For more information\nIf you have any questions or comments about this advisory, e-mail us at security@matrix.org.\n",
  "id": "GHSA-jj53-8fmw-f2w2",
  "modified": "2024-09-24T15:37:56Z",
  "published": "2021-09-01T18:25:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jj53-8fmw-f2w2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39163"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/cb35df940a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/synapse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/releases/tag/v1.41.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2021-424.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2VHDEPCZ22GJFMZCWA2XZAGPOEV72POF"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXT7ID7DNBRN2TVTETU3SYQHJKEG6PXN"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner."
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2021-424

Vulnerability from pysec

cve-2021-39163

Vulnerability from cvelistv5

ghsa-jj53-8fmw-f2w2

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

Tags

Sightings

Nomenclature