GSD-2021-21332

Vulnerability from gsd - Updated: 2023-12-13 01:23
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 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.
Aliases
Aliases
CVE-2021-21332
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{
  "GSD": {
    "alias": "CVE-2021-21332",
    "description": "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 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.",
    "id": "GSD-2021-21332",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-21332.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21332"
      ],
      "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 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.",
      "id": "GSD-2021-21332",
      "modified": "2023-12-13T01:23:10.395888Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-21332",
        "STATE": "PUBLIC",
        "TITLE": "Cross-site scripting (XSS) vulnerability in the password reset endpoint"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "synapse",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.27.0"
                        }
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                    }
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              },
              "vendor_name": "matrix-org"
            }
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            "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 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-79 Cross-site Scripting (XSS)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899",
            "refsource": "CONFIRM",
            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899"
          },
          {
            "name": "https://github.com/matrix-org/synapse/releases/tag/v1.27.0",
            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/releases/tag/v1.27.0"
          },
          {
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            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/pull/9200"
          },
          {
            "name": "https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df",
            "refsource": "MISC",
            "url": "https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df"
          },
          {
            "name": "FEDORA-2021-a627cfd31e",
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-246w-56m2-5899",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.27.0",
          "affected_versions": "All versions before 1.27.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2021-11-23",
          "description": "Synapse is a Matrix reference homeserver written in python. Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains.",
          "fixed_versions": [
            "1.27.0"
          ],
          "identifier": "CVE-2021-21332",
          "identifiers": [
            "CVE-2021-21332",
            "GHSA-246w-56m2-5899"
          ],
          "not_impacted": "All versions starting from 1.27.0",
          "package_slug": "pypi/matrix-synapse",
          "pubdate": "2021-03-26",
          "solution": "Upgrade to version 1.27.0 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21332"
          ],
          "uuid": "c483836a-782c-4865-8647-ccb5a8345eb9"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.27.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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                "vulnerable": true
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        "description": {
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              "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 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0."
            }
          ]
        },
        "problemtype": {
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                  "value": "CWE-79"
                },
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                  "lang": "en",
                  "value": "CWE-79"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/matrix-org/synapse/pull/9200",
              "refsource": "MISC",
              "tags": [
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                "Third Party Advisory"
              ],
              "url": "https://github.com/matrix-org/synapse/pull/9200"
            },
            {
              "name": "https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df",
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              "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899"
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            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 4.7
        }
      },
      "lastModifiedDate": "2021-11-23T22:31Z",
      "publishedDate": "2021-03-26T20:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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