gsd-2022-31152
Vulnerability from gsd
Modified
2023-12-13 01:19
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](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.
Aliases
Aliases
CVE-2022-31152


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-31152",
    "description": "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": "GSD-2022-31152",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-31152.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-31152"
      ],
      "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": "GSD-2022-31152",
      "modified": "2023-12-13T01:19:18.092942Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-31152",
        "STATE": "PUBLIC",
        "TITLE": "Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "synapse",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.62.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "matrix-org"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "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."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-703: Improper Check or Handling of Exceptional Conditions"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765",
            "refsource": "CONFIRM",
            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
          },
          {
            "name": "https://github.com/matrix-org/synapse/pull/13087",
            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/pull/13087"
          },
          {
            "name": "https://github.com/matrix-org/synapse/pull/13088",
            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/pull/13088"
          },
          {
            "name": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0",
            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-jhjh-776m-4765",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.62.0",
          "affected_versions": "All versions before 1.62.0",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-755",
            "CWE-937"
          ],
          "date": "2022-09-09",
          "description": "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_allow list`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_allow list) to an empty list (`[]`) as a workaround.",
          "fixed_versions": [
            "1.62.0"
          ],
          "identifier": "CVE-2022-31152",
          "identifiers": [
            "CVE-2022-31152",
            "GHSA-jhjh-776m-4765",
            "GMS-2022-3903"
          ],
          "not_impacted": "All versions starting from 1.62.0",
          "package_slug": "pypi/matrix-synapse",
          "pubdate": "2022-09-02",
          "solution": "Upgrade to version 1.62.0 or above.",
          "title": "Improper Handling of Exceptional Conditions",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2022-31152",
            "https://github.com/matrix-org/synapse/pull/13087",
            "https://github.com/matrix-org/synapse/pull/13088",
            "https://github.com/matrix-org/synapse/releases/tag/v1.62.0",
            "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765",
            "https://github.com/advisories/GHSA-jhjh-776m-4765"
          ],
          "uuid": "98aca2db-ac1c-4e14-a428-2333600e7b4a"
        },
        {
          "affected_range": "\u003c0",
          "affected_versions": "All versions before 1.62",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2022-08-31",
          "description": "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.",
          "fixed_versions": [
            "1.62"
          ],
          "identifier": "GMS-2022-3903",
          "identifiers": [
            "GHSA-jhjh-776m-4765",
            "GMS-2022-3903",
            "CVE-2022-31152"
          ],
          "not_impacted": "All versions starting from 1.62",
          "package_slug": "pypi/matrix-synapse",
          "pubdate": "2022-08-31",
          "solution": "Upgrade to version 1.62 or above.",
          "title": "Duplicate of ./pypi/matrix-synapse/CVE-2022-31152.yml",
          "urls": [
            "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765",
            "https://github.com/matrix-org/synapse/pull/13087",
            "https://github.com/matrix-org/synapse/pull/13088",
            "https://github.com/matrix-org/synapse/releases/tag/v1.62.0",
            "https://github.com/advisories/GHSA-jhjh-776m-4765"
          ],
          "uuid": "ee7e688b-3366-4dca-8e02-659ee717c475"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.62.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-31152"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-755"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/matrix-org/synapse/pull/13087",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/matrix-org/synapse/pull/13087"
            },
            {
              "name": "https://github.com/matrix-org/synapse/pull/13088",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/matrix-org/synapse/pull/13088"
            },
            {
              "name": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0",
              "refsource": "MISC",
              "tags": [
                "Release Notes",
                "Third Party Advisory"
              ],
              "url": "https://github.com/matrix-org/synapse/releases/tag/v1.62.0"
            },
            {
              "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Mitigation",
                "Third Party Advisory"
              ],
              "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-09-09T03:21Z",
      "publishedDate": "2022-09-02T20:15Z"
    }
  }
}


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