pysec - pysec-2023-66

pysec-2023-66

Vulnerability from pysec

Published

2023-05-26 14:15

Modified

2023-06-05 01:12

Details

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse",
        "purl": "pkg:pypi/matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.62.0"
            },
            {
              "fixed": "1.68.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.62.0",
        "1.63.0",
        "1.63.0rc1",
        "1.63.1",
        "1.64.0",
        "1.64.0rc1",
        "1.64.0rc2",
        "1.65.0",
        "1.65.0rc1",
        "1.65.0rc2",
        "1.66.0",
        "1.66.0rc1",
        "1.66.0rc2",
        "1.67.0",
        "1.67.0rc1",
        "1.68.0rc1",
        "1.68.0rc2"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-39374",
    "GHSA-p9qp-c452-f9r7"
  ],
  "details": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0\n\n",
  "id": "PYSEC-2023-66",
  "modified": "2023-06-05T01:12:54.698222Z",
  "published": "2023-05-26T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/matrix-org/synapse/pull/13723"
    },
    {
      "type": "FIX",
      "url": "https://github.com/matrix-org/synapse/pull/13723"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7"
    }
  ]
}

cve-2022-39374

Vulnerability from cvelistv5

Published

2023-05-26 13:44

Modified

2024-08-03 12:00

Severity ?

6.5 (Medium) - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

Synapse Denial of service due to incorrect application of event authorization rules during state resolution

References

▼	URL	Tags
	https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7	x_refsource_CONFIRM
	https://github.com/matrix-org/synapse/pull/13723	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/

Impacted products

Vendor

Product

Version

▼

matrix-org

synapse

Version: >= 1.62.0, < 1.68.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:00:44.179Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7"
          },
          {
            "name": "https://github.com/matrix-org/synapse/pull/13723",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/pull/13723"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "synapse",
          "vendor": "matrix-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.62.0, \u003c 1.68.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0\n\n"
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-05-26T13:44:44.113Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7"
        },
        {
          "name": "https://github.com/matrix-org/synapse/pull/13723",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/matrix-org/synapse/pull/13723"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/"
        }
      ],
      "source": {
        "advisory": "GHSA-p9qp-c452-f9r7",
        "discovery": "UNKNOWN"
      },
      "title": "Synapse Denial of service due to incorrect application of event authorization rules during state resolution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-39374",
    "datePublished": "2023-05-26T13:44:44.113Z",
    "dateReserved": "2022-09-02T14:16:35.887Z",
    "dateUpdated": "2024-08-03T12:00:44.179Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-p9qp-c452-f9r7

Vulnerability from github

Published

2023-05-24 17:21

Modified

2024-09-30 20:25

Severity ?

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

Summary

Synapse Denial of service due to incorrect application of event authorization rules during state resolution

Details

Impact

If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected.

Synapse homeservers are affected by this issue if and only if they are joined to rooms which members of untrusted homeservers are joined or invited to.

Synapse homeservers in rooms available over public federation are affected.
Synapse homeservers with federation disabled are not affected.
Synapse homeservers in a closed federation containing only trusted servers are not affected.
Synapse homeservers which are only joined to rooms with federation disabled[^1] are not affected.

Patches

Administrators of homeservers with federation enabled are advised to upgrade to 1.68.0 or higher.

Workarounds

Federation can be disabled by setting federation_domain_whitelist to an empty list ([]). from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0

References

https://github.com/matrix-org/synapse/pull/13723

[^1]: See m.federate in the m.room.create definition.

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": "1.62.0"
            },
            {
              "fixed": "1.68.0rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-39374"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-05-24T17:21:33Z",
    "nvd_published_at": "2023-05-26T14:15:10Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nIf Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected.\n\nSynapse homeservers are affected by this issue if and only if they are joined to rooms which members of untrusted homeservers are joined or invited to. \n\n- Synapse homeservers in rooms available over public federation **are** affected.\n- Synapse homeservers with federation disabled are not affected.\n- Synapse homeservers in a closed federation containing only trusted servers are not affected.\n- Synapse homeservers which are only joined to rooms with federation disabled[^1] are not affected.\n\n### Patches\nAdministrators of homeservers with federation enabled are advised to upgrade to 1.68.0 or higher.\n\n### Workarounds\n * Federation can be disabled by setting [`federation_domain_whitelist`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_whitelist) to an empty list (`[]`). from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0\n\n### References\n- https://github.com/matrix-org/synapse/pull/13723\n\n[^1]: See `m.federate` in the [`m.room.create` definition](https://spec.matrix.org/v1.4/client-server-api/#mroomcreate).\n\n### For more information\n\nIf you have any questions or comments about this advisory, e-mail us at [security@matrix.org](mailto:security@matrix.org).",
  "id": "GHSA-p9qp-c452-f9r7",
  "modified": "2024-09-30T20:25:22Z",
  "published": "2023-05-24T17:21:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39374"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/13723"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/b73cbb82157d9666e8d667733afebc0d09ed858c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/synapse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-66.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Synapse Denial of service due to incorrect application of event authorization rules during state resolution"
}

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-2023-66

Vulnerability from pysec

cve-2022-39374

Vulnerability from cvelistv5

ghsa-p9qp-c452-f9r7

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

Tags

Sightings

Nomenclature