pysec - pysec-2021-26

pysec-2021-26

Vulnerability from pysec

Published

2021-04-12 22:15

Modified

2021-04-21 16:45

Details

Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse",
        "purl": "pkg:pypi/matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.33.5",
        "0.33.5.1",
        "0.33.6rc1",
        "0.33.6",
        "0.33.7rc1",
        "0.33.7rc2",
        "0.33.7",
        "0.33.8rc2",
        "0.33.8",
        "0.33.9",
        "0.34.0rc1",
        "0.34.0rc2",
        "0.34.0",
        "0.34.0.1",
        "0.34.1.1",
        "0.99.0rc1",
        "0.99.0rc2",
        "0.99.0rc3",
        "0.99.0rc4",
        "0.99.0",
        "0.99.1rc1",
        "0.99.1rc2",
        "0.99.1",
        "0.99.1.1",
        "0.99.2rc1",
        "0.99.2",
        "0.99.3rc1",
        "0.99.3",
        "0.99.3.1",
        "0.99.3.2",
        "0.99.4rc1",
        "0.99.4",
        "0.99.5rc1",
        "0.99.5",
        "0.99.5.1",
        "0.99.5.2",
        "1.0.0rc1",
        "1.0.0rc2",
        "1.0.0rc3",
        "1.0.0",
        "1.1.0rc1",
        "1.1.0rc2",
        "1.1.0",
        "1.2.0rc1",
        "1.2.0rc2",
        "1.2.0",
        "1.2.1",
        "1.3.0rc1",
        "1.3.0",
        "1.3.1",
        "1.4.0rc1",
        "1.4.0rc2",
        "1.4.0",
        "1.4.1rc1",
        "1.4.1",
        "1.5.0rc1",
        "1.5.0rc2",
        "1.5.0",
        "1.5.1",
        "1.6.0rc1",
        "1.6.0rc2",
        "1.6.0",
        "1.6.1",
        "1.7.0rc1",
        "1.7.0rc2",
        "1.7.0",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.8.0rc1",
        "1.8.0",
        "1.9.0.dev1",
        "1.9.0.dev2",
        "1.9.0rc1",
        "1.9.0",
        "1.9.1",
        "1.10.0rc1",
        "1.10.0rc2",
        "1.10.0rc3",
        "1.10.0rc5",
        "1.10.0",
        "1.10.1",
        "1.11.0rc1",
        "1.11.0",
        "1.11.1",
        "1.12.0rc1",
        "1.12.0",
        "1.12.1rc1",
        "1.12.1",
        "1.12.2",
        "1.12.3",
        "1.12.4rc1",
        "1.12.4",
        "1.13.0rc1",
        "1.13.0rc2",
        "1.13.0rc3",
        "1.13.0",
        "1.14.0rc1",
        "1.14.0rc2",
        "1.14.0",
        "1.15.0rc1",
        "1.15.0",
        "1.15.1",
        "1.15.2",
        "1.16.0rc1",
        "1.16.0rc2",
        "1.16.0",
        "1.16.1",
        "1.17.0rc1",
        "1.17.0",
        "1.18.0rc1",
        "1.18.0rc2",
        "1.18.0",
        "1.19.0rc1",
        "1.19.0",
        "1.19.1rc1",
        "1.19.1",
        "1.19.2",
        "1.19.3",
        "1.20.0rc1",
        "1.20.0rc2",
        "1.20.0rc3",
        "1.20.0rc4",
        "1.20.0rc5",
        "1.20.0",
        "1.20.1",
        "1.21.0rc1",
        "1.21.0rc2",
        "1.21.0rc3",
        "1.21.0",
        "1.21.1",
        "1.21.2",
        "1.22.0rc1",
        "1.22.0rc2",
        "1.22.0",
        "1.22.1",
        "1.23.0rc1",
        "1.23.0",
        "1.23.1",
        "1.24.0rc1",
        "1.24.0rc2",
        "1.24.0",
        "1.25.0rc1",
        "1.25.0",
        "1.26.0rc1",
        "1.26.0rc2",
        "1.26.0",
        "1.27.0rc1",
        "1.27.0rc2",
        "1.27.0",
        "1.28.0rc1"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21393",
    "GHSA-jrh7-mhhx-6h88"
  ],
  "details": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.",
  "id": "PYSEC-2021-26",
  "modified": "2021-04-21T16:45:00Z",
  "published": "2021-04-12T22:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/9321"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/matrix-synapse/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/9393"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88"
    }
  ]
}

cve-2021-21393

Vulnerability from cvelistv5

Published

2021-04-12 21:35

Modified

2024-08-03 18:09

Severity ?

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

Summary

Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints

References

▼	URL	Tags
	https://pypi.org/project/matrix-synapse/	x_refsource_MISC
	https://github.com/matrix-org/synapse/pull/9321	x_refsource_MISC
	https://github.com/matrix-org/synapse/pull/9393	x_refsource_MISC
	https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88	x_refsource_CONFIRM
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/	vendor-advisory, x_refsource_FEDORA

Impacted products

Vendor

Product

Version

▼

matrix-org

synapse

Version: < 1.28.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:09:15.986Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://pypi.org/project/matrix-synapse/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/pull/9321"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/pull/9393"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88"
          },
          {
            "name": "FEDORA-2021-a627cfd31e",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "synapse",
          "vendor": "matrix-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.28.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-02T02:06:32",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://pypi.org/project/matrix-synapse/"
        },
        {
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            "x_refsource_MISC"
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          "url": "https://github.com/matrix-org/synapse/pull/9321"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/matrix-org/synapse/pull/9393"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88"
        },
        {
          "name": "FEDORA-2021-a627cfd31e",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
        }
      ],
      "source": {
        "advisory": "GHSA-jrh7-mhhx-6h88",
        "discovery": "UNKNOWN"
      },
      "title": "Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-21393",
          "STATE": "PUBLIC",
          "TITLE": "Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "synapse",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.28.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "matrix-org"
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            ]
          }
        },
        "data_format": "MITRE",
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        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "impact": {
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
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        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20 Improper Input Validation"
                }
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            }
          ]
        },
        "references": {
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            {
              "name": "https://pypi.org/project/matrix-synapse/",
              "refsource": "MISC",
              "url": "https://pypi.org/project/matrix-synapse/"
            },
            {
              "name": "https://github.com/matrix-org/synapse/pull/9321",
              "refsource": "MISC",
              "url": "https://github.com/matrix-org/synapse/pull/9321"
            },
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              "url": "https://github.com/matrix-org/synapse/pull/9393"
            },
            {
              "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88",
              "refsource": "CONFIRM",
              "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88"
            },
            {
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              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-jrh7-mhhx-6h88",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-21393",
    "datePublished": "2021-04-12T21:35:14",
    "dateReserved": "2020-12-22T00:00:00",
    "dateUpdated": "2024-08-03T18:09:15.986Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-jrh7-mhhx-6h88

Vulnerability from github

Published

2021-04-13 15:12

Modified

2024-09-30 20:39

Severity ?

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

Summary

Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints

Details

Impact

Missing input validation of some parameters on the groups (also known as communities) endpoints could cause excessive use of disk space and memory leading to resource exhaustion. Additionally clients may have issues rendering large fields.

Patches

This issue is fixed by #9321 and #9393.

Workarounds

The groups feature can be disabled (by setting enable_group_creation to False) to mitigate this issue. Note that it is disabled by default.

Other information

Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them.

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-synapse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21393"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-12T20:48:55Z",
    "nvd_published_at": "2021-04-12T22:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nMissing input validation of some parameters on the groups (also known as communities) endpoints could cause excessive use of disk space and memory leading to resource exhaustion. Additionally clients may have issues rendering large fields.\n\n### Patches\nThis issue is fixed by #9321 and #9393.\n\n### Workarounds\nThe groups feature can be disabled (by setting `enable_group_creation` to `False`) to mitigate this issue. Note that it is disabled by default.\n\n### Other information\nNote that the groups feature is not part of the [Matrix specification](https://matrix.org/docs/spec/) and the chosen maximum lengths are arbitrary. Not all clients might abide by them.",
  "id": "GHSA-jrh7-mhhx-6h88",
  "modified": "2024-09-30T20:39:15Z",
  "published": "2021-04-13T15:12:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-jrh7-mhhx-6h88"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21393"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/9321"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/pull/9393"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/3f58fc848d0002de4605bed91603a1f9f245d128"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/synapse/commit/d2f0ec12d5c8f113095408888e87e191ac546499"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/synapse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2021-26.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/matrix-synapse"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints"
}

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-2021-26

Vulnerability from pysec

cve-2021-21393

Vulnerability from cvelistv5

ghsa-jrh7-mhhx-6h88

Vulnerability from github

Impact

Patches

Workarounds

Other information

Tags

Sightings

Nomenclature