pysec - pysec-2022-262

pysec-2022-262

Vulnerability from pysec

Published

2022-09-02 20:15

Modified

2022-09-09 06:19

Details

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of event authorization rules which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. Federation can be disabled by setting federation_domain_whitelist to an empty list ([]) as a workaround.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse",
        "purl": "pkg:pypi/matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.62.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.33.5",
        "0.33.5.1",
        "0.33.6",
        "0.33.6rc1",
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        "0.33.7rc2",
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        "1.55.2",
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        "1.56.0rc1",
        "1.57.0",
        "1.57.0rc1",
        "1.57.1",
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        "1.58.0rc2",
        "1.58.1",
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        "1.59.0rc1",
        "1.59.0rc2",
        "1.59.1",
        "1.6.0",
        "1.6.0rc1",
        "1.6.0rc2",
        "1.6.1",
        "1.60.0",
        "1.60.0rc1",
        "1.60.0rc2",
        "1.61.0",
        "1.61.0rc1",
        "1.61.1",
        "1.62.0rc1",
        "1.62.0rc2",
        "1.62.0rc3",
        "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-2022-31152",
    "GHSA-jhjh-776m-4765"
  ],
  "details": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. 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 (`[]`) as a workaround.",
  "id": "PYSEC-2022-262",
  "modified": "2022-09-09T06:19:32.373264Z",
  "published": "2022-09-02T20:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/13087"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/13088"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
    }
  ]
}

cve-2022-31152

Vulnerability from cvelistv5

Published

2022-09-02 20:00

Modified

2024-08-03 07:11

Severity ?

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

Summary

Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules

References

▼	URL	Tags
	https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765	x_refsource_CONFIRM
	https://github.com/matrix-org/synapse/pull/13087	x_refsource_MISC
	https://github.com/matrix-org/synapse/pull/13088	x_refsource_MISC
	https://github.com/matrix-org/synapse/releases/tag/v1.62.0	x_refsource_MISC

Impacted products

Vendor

Product

Version

▼

matrix-org

synapse

Version: < 1.62.0

Show details on NVD website

JSON

To clipboard

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            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
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            "url": "https://github.com/matrix-org/synapse/pull/13087"
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            "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
          }
        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
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        {
          "lang": "en",
          "value": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. 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 (`[]`) as a workaround."
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            "confidentialityImpact": "LOW",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "problemTypes": [
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              "cweId": "CWE-703",
              "description": "CWE-703: Improper Check or Handling of Exceptional Conditions",
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              "type": "CWE"
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      "providerMetadata": {
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      "references": [
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          "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
        },
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          "url": "https://github.com/matrix-org/synapse/pull/13087"
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          "url": "https://github.com/matrix-org/synapse/pull/13088"
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          "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
        }
      ],
      "source": {
        "advisory": "GHSA-jhjh-776m-4765",
        "discovery": "UNKNOWN"
      },
      "title": "Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules",
      "x_legacyV4Record": {
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        },
        "affects": {
          "vendor": {
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            "availabilityImpact": "HIGH",
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            "baseSeverity": "MEDIUM",
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        "references": {
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  "cveMetadata": {
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    "datePublished": "2022-09-02T20:00:16",
    "dateReserved": "2022-05-18T00:00:00",
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}

ghsa-jhjh-776m-4765

Vulnerability from github

Published

2022-08-31 21:25

Modified

2024-09-30 20:26

Severity ?

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

Summary

Denial of service due to incorrect application of event authorization rules

Details

Impact

The Matrix specification specifies a list of event authorization rules which must be checked when determining if an event should be accepted into a room.

In versions of Synapse up to and including v1.61, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers.

Patches

Administrators of homeservers with federation enabled are advised to upgrade to v1.62.0 or higher.

Workarounds

Federation can be disabled by setting federation_domain_whitelist to an empty list ([]).

References

https://github.com/matrix-org/synapse/pull/13087
https://github.com/matrix-org/synapse/pull/13088

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": "1.62.0rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-31152"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-703",
      "CWE-755"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-08-31T21:25:37Z",
    "nvd_published_at": "2022-09-02T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nThe Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.3/rooms/v10/#authorization-rules) which must be checked when determining if an event should be accepted into a room.\n\nIn versions of Synapse up to and including v1.61, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers.\n\n### Patches\n\nAdministrators of homeservers with federation enabled are advised to upgrade to v1.62.0 or higher.\n\n### Workarounds\n\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 (`[]`).\n\n### References\n\n * https://github.com/matrix-org/synapse/pull/13087\n * https://github.com/matrix-org/synapse/pull/13088\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-jhjh-776m-4765",
  "modified": "2024-09-30T20:26:48Z",
  "published": "2022-08-31T21:25:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31152"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/13087"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/13088"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/d4b1c0d800eaa83c4d56a9cf17881ad362b9194b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/e16ea87d0f8c4c30cad36f85488eb1f647e640b0"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/synapse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2022-262.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Denial of service due to incorrect application of event authorization rules"
}

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-2022-262

Vulnerability from pysec

cve-2022-31152

Vulnerability from cvelistv5

ghsa-jhjh-776m-4765

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

Tags

Sightings

Nomenclature